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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2006-01-09 19:18:33 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-01-09 19:18:33 +0000
commit0a3a98f6dd4e8f4d928a09302c0d1c56f2192ac3 (patch)
tree92f55e374a84d06ce8213a4540454760fdecf137 /fs
parent8ef12c9f01afba47c2d33bb939085111ca0d0f7d (diff)
parent5367f2d67c7d0bf1faae90e6e7b4e2ac3c9b5e0f (diff)
downloadop-kernel-dev-0a3a98f6dd4e8f4d928a09302c0d1c56f2192ac3.zip
op-kernel-dev-0a3a98f6dd4e8f4d928a09302c0d1c56f2192ac3.tar.gz
Merge Linus' tree.
Diffstat (limited to 'fs')
-rw-r--r--fs/9p/9p.c314
-rw-r--r--fs/9p/9p.h77
-rw-r--r--fs/9p/Makefile10
-rw-r--r--fs/9p/conv.c884
-rw-r--r--fs/9p/conv.h35
-rw-r--r--fs/9p/debug.h23
-rw-r--r--fs/9p/error.c10
-rw-r--r--fs/9p/error.h2
-rw-r--r--fs/9p/fid.c5
-rw-r--r--fs/9p/mux.c1145
-rw-r--r--fs/9p/mux.h41
-rw-r--r--fs/9p/trans_fd.c53
-rw-r--r--fs/9p/trans_sock.c160
-rw-r--r--fs/9p/transport.h4
-rw-r--r--fs/9p/v9fs.c59
-rw-r--r--fs/9p/v9fs.h17
-rw-r--r--fs/9p/v9fs_vfs.h5
-rw-r--r--fs/9p/vfs_dentry.c15
-rw-r--r--fs/9p/vfs_dir.c47
-rw-r--r--fs/9p/vfs_file.c28
-rw-r--r--fs/9p/vfs_inode.c617
-rw-r--r--fs/9p/vfs_super.c12
-rw-r--r--fs/Kconfig.binfmt2
-rw-r--r--fs/Makefile2
-rw-r--r--fs/afs/dir.c2
-rw-r--r--fs/afs/volume.h4
-rw-r--r--fs/aio.c3
-rw-r--r--fs/attr.c24
-rw-r--r--fs/autofs4/autofs_i.h2
-rw-r--r--fs/autofs4/expire.c12
-rw-r--r--fs/autofs4/inode.c4
-rw-r--r--fs/autofs4/root.c3
-rw-r--r--fs/binfmt_elf.c16
-rw-r--r--fs/buffer.c76
-rw-r--r--fs/cifs/file.c6
-rw-r--r--fs/cifs/inode.c3
-rw-r--r--fs/coda/cache.c2
-rw-r--r--fs/compat.c22
-rw-r--r--fs/dcache.c34
-rw-r--r--fs/drop_caches.c68
-rw-r--r--fs/exec.c8
-rw-r--r--fs/ext3/ialloc.c6
-rw-r--r--fs/ext3/namei.c2
-rw-r--r--fs/ext3/resize.c32
-rw-r--r--fs/ext3/super.c54
-rw-r--r--fs/fat/cache.c14
-rw-r--r--fs/fat/dir.c24
-rw-r--r--fs/fat/fatent.c10
-rw-r--r--fs/fat/file.c33
-rw-r--r--fs/fat/inode.c119
-rw-r--r--fs/fat/misc.c8
-rw-r--r--fs/fcntl.c6
-rw-r--r--fs/file_table.c8
-rw-r--r--fs/freevxfs/vxfs_immed.c4
-rw-r--r--fs/inode.c4
-rw-r--r--fs/jffs/inode-v23.c4
-rw-r--r--fs/jfs/jfs_dmap.c3
-rw-r--r--fs/jfs/jfs_imap.c6
-rw-r--r--fs/jfs/jfs_txnmgr.c6
-rw-r--r--fs/jfs/jfs_umount.c6
-rw-r--r--fs/jfs/resize.c3
-rw-r--r--fs/jfs/super.c3
-rw-r--r--fs/libfs.c12
-rw-r--r--fs/locks.c7
-rw-r--r--fs/mpage.c4
-rw-r--r--fs/namei.c2
-rw-r--r--fs/namespace.c6
-rw-r--r--fs/ncpfs/dir.c2
-rw-r--r--fs/ncpfs/ncplib_kernel.h4
-rw-r--r--fs/nfs/inode.c8
-rw-r--r--fs/nfs/nfsroot.c4
-rw-r--r--fs/ocfs2/cluster/masklog.h7
-rw-r--r--fs/open.c15
-rw-r--r--fs/pnode.c2
-rw-r--r--fs/proc/generic.c2
-rw-r--r--fs/proc/inode.c2
-rw-r--r--fs/proc/internal.h4
-rw-r--r--fs/proc/proc_misc.c4
-rw-r--r--fs/proc/root.c3
-rw-r--r--fs/proc/task_mmu.c127
-rw-r--r--fs/relayfs/buffers.c3
-rw-r--r--fs/relayfs/inode.c214
-rw-r--r--fs/relayfs/relay.c69
-rw-r--r--fs/relayfs/relay.h4
-rw-r--r--fs/romfs/inode.c6
-rw-r--r--fs/smbfs/cache.c4
-rw-r--r--fs/smbfs/file.c7
-rw-r--r--fs/smbfs/inode.c3
-rw-r--r--fs/smbfs/proc.c2
-rw-r--r--fs/super.c3
-rw-r--r--fs/sysv/dir.c4
-rw-r--r--fs/udf/balloc.c2
-rw-r--r--fs/udf/inode.c5
-rw-r--r--fs/ufs/super.c4
-rw-r--r--fs/xfs/linux-2.6/xfs_fs_subr.c3
-rw-r--r--fs/xfs/xfs_log.h8
96 files changed, 2771 insertions, 1996 deletions
diff --git a/fs/9p/9p.c b/fs/9p/9p.c
index e847f50..1a6d087 100644
--- a/fs/9p/9p.c
+++ b/fs/9p/9p.c
@@ -1,8 +1,9 @@
/*
* linux/fs/9p/9p.c
*
- * This file contains functions 9P2000 functions
+ * This file contains functions to perform synchronous 9P calls
*
+ * Copyright (C) 2004 by Latchesar Ionkov <lucho@ionkov.net>
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
* Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
*
@@ -33,6 +34,7 @@
#include "debug.h"
#include "v9fs.h"
#include "9p.h"
+#include "conv.h"
#include "mux.h"
/**
@@ -46,16 +48,21 @@
int
v9fs_t_version(struct v9fs_session_info *v9ses, u32 msize,
- char *version, struct v9fs_fcall **fcall)
+ char *version, struct v9fs_fcall **rcp)
{
- struct v9fs_fcall msg;
+ int ret;
+ struct v9fs_fcall *tc;
dprintk(DEBUG_9P, "msize: %d version: %s\n", msize, version);
- msg.id = TVERSION;
- msg.params.tversion.msize = msize;
- msg.params.tversion.version = version;
+ tc = v9fs_create_tversion(msize, version);
- return v9fs_mux_rpc(v9ses, &msg, fcall);
+ if (!IS_ERR(tc)) {
+ ret = v9fs_mux_rpc(v9ses->mux, tc, rcp);
+ kfree(tc);
+ } else
+ ret = PTR_ERR(tc);
+
+ return ret;
}
/**
@@ -71,19 +78,45 @@ v9fs_t_version(struct v9fs_session_info *v9ses, u32 msize,
int
v9fs_t_attach(struct v9fs_session_info *v9ses, char *uname, char *aname,
- u32 fid, u32 afid, struct v9fs_fcall **fcall)
+ u32 fid, u32 afid, struct v9fs_fcall **rcp)
{
- struct v9fs_fcall msg;
+ int ret;
+ struct v9fs_fcall* tc;
dprintk(DEBUG_9P, "uname '%s' aname '%s' fid %d afid %d\n", uname,
aname, fid, afid);
- msg.id = TATTACH;
- msg.params.tattach.fid = fid;
- msg.params.tattach.afid = afid;
- msg.params.tattach.uname = uname;
- msg.params.tattach.aname = aname;
- return v9fs_mux_rpc(v9ses, &msg, fcall);
+ tc = v9fs_create_tattach(fid, afid, uname, aname);
+ if (!IS_ERR(tc)) {
+ ret = v9fs_mux_rpc(v9ses->mux, tc, rcp);
+ kfree(tc);
+ } else
+ ret = PTR_ERR(tc);
+
+ return ret;
+}
+
+static void v9fs_t_clunk_cb(void *a, struct v9fs_fcall *tc,
+ struct v9fs_fcall *rc, int err)
+{
+ int fid;
+ struct v9fs_session_info *v9ses;
+
+ if (err)
+ return;
+
+ fid = tc->params.tclunk.fid;
+ kfree(tc);
+
+ if (!rc)
+ return;
+
+ dprintk(DEBUG_9P, "tcall id %d rcall id %d\n", tc->id, rc->id);
+ v9ses = a;
+ if (rc->id == RCLUNK)
+ v9fs_put_idpool(fid, &v9ses->fidpool);
+
+ kfree(rc);
}
/**
@@ -95,16 +128,25 @@ v9fs_t_attach(struct v9fs_session_info *v9ses, char *uname, char *aname,
*/
int
-v9fs_t_clunk(struct v9fs_session_info *v9ses, u32 fid,
- struct v9fs_fcall **fcall)
+v9fs_t_clunk(struct v9fs_session_info *v9ses, u32 fid)
{
- struct v9fs_fcall msg;
+ int ret;
+ struct v9fs_fcall *tc, *rc;
dprintk(DEBUG_9P, "fid %d\n", fid);
- msg.id = TCLUNK;
- msg.params.tclunk.fid = fid;
- return v9fs_mux_rpc(v9ses, &msg, fcall);
+ rc = NULL;
+ tc = v9fs_create_tclunk(fid);
+ if (!IS_ERR(tc))
+ ret = v9fs_mux_rpc(v9ses->mux, tc, &rc);
+ else
+ ret = PTR_ERR(tc);
+
+ if (ret)
+ dprintk(DEBUG_ERROR, "failed fid %d err %d\n", fid, ret);
+
+ v9fs_t_clunk_cb(v9ses, tc, rc, ret);
+ return ret;
}
/**
@@ -114,14 +156,21 @@ v9fs_t_clunk(struct v9fs_session_info *v9ses, u32 fid,
*
*/
-int v9fs_t_flush(struct v9fs_session_info *v9ses, u16 tag)
+int v9fs_t_flush(struct v9fs_session_info *v9ses, u16 oldtag)
{
- struct v9fs_fcall msg;
+ int ret;
+ struct v9fs_fcall *tc;
+
+ dprintk(DEBUG_9P, "oldtag %d\n", oldtag);
+
+ tc = v9fs_create_tflush(oldtag);
+ if (!IS_ERR(tc)) {
+ ret = v9fs_mux_rpc(v9ses->mux, tc, NULL);
+ kfree(tc);
+ } else
+ ret = PTR_ERR(tc);
- dprintk(DEBUG_9P, "oldtag %d\n", tag);
- msg.id = TFLUSH;
- msg.params.tflush.oldtag = tag;
- return v9fs_mux_rpc(v9ses, &msg, NULL);
+ return ret;
}
/**
@@ -133,17 +182,22 @@ int v9fs_t_flush(struct v9fs_session_info *v9ses, u16 tag)
*/
int
-v9fs_t_stat(struct v9fs_session_info *v9ses, u32 fid, struct v9fs_fcall **fcall)
+v9fs_t_stat(struct v9fs_session_info *v9ses, u32 fid, struct v9fs_fcall **rcp)
{
- struct v9fs_fcall msg;
+ int ret;
+ struct v9fs_fcall *tc;
dprintk(DEBUG_9P, "fid %d\n", fid);
- if (fcall)
- *fcall = NULL;
- msg.id = TSTAT;
- msg.params.tstat.fid = fid;
- return v9fs_mux_rpc(v9ses, &msg, fcall);
+ ret = -ENOMEM;
+ tc = v9fs_create_tstat(fid);
+ if (!IS_ERR(tc)) {
+ ret = v9fs_mux_rpc(v9ses->mux, tc, rcp);
+ kfree(tc);
+ } else
+ ret = PTR_ERR(tc);
+
+ return ret;
}
/**
@@ -157,16 +211,21 @@ v9fs_t_stat(struct v9fs_session_info *v9ses, u32 fid, struct v9fs_fcall **fcall)
int
v9fs_t_wstat(struct v9fs_session_info *v9ses, u32 fid,
- struct v9fs_stat *stat, struct v9fs_fcall **fcall)
+ struct v9fs_wstat *wstat, struct v9fs_fcall **rcp)
{
- struct v9fs_fcall msg;
+ int ret;
+ struct v9fs_fcall *tc;
+
+ dprintk(DEBUG_9P, "fid %d\n", fid);
- dprintk(DEBUG_9P, "fid %d length %d\n", fid, (int)stat->length);
- msg.id = TWSTAT;
- msg.params.twstat.fid = fid;
- msg.params.twstat.stat = stat;
+ tc = v9fs_create_twstat(fid, wstat, v9ses->extended);
+ if (!IS_ERR(tc)) {
+ ret = v9fs_mux_rpc(v9ses->mux, tc, rcp);
+ kfree(tc);
+ } else
+ ret = PTR_ERR(tc);
- return v9fs_mux_rpc(v9ses, &msg, fcall);
+ return ret;
}
/**
@@ -183,23 +242,27 @@ v9fs_t_wstat(struct v9fs_session_info *v9ses, u32 fid,
int
v9fs_t_walk(struct v9fs_session_info *v9ses, u32 fid, u32 newfid,
- char *name, struct v9fs_fcall **fcall)
+ char *name, struct v9fs_fcall **rcp)
{
- struct v9fs_fcall msg;
+ int ret;
+ struct v9fs_fcall *tc;
+ int nwname;
dprintk(DEBUG_9P, "fid %d newfid %d wname '%s'\n", fid, newfid, name);
- msg.id = TWALK;
- msg.params.twalk.fid = fid;
- msg.params.twalk.newfid = newfid;
-
- if (name) {
- msg.params.twalk.nwname = 1;
- msg.params.twalk.wnames = &name;
- } else {
- msg.params.twalk.nwname = 0;
- }
-
- return v9fs_mux_rpc(v9ses, &msg, fcall);
+
+ if (name)
+ nwname = 1;
+ else
+ nwname = 0;
+
+ tc = v9fs_create_twalk(fid, newfid, nwname, &name);
+ if (!IS_ERR(tc)) {
+ ret = v9fs_mux_rpc(v9ses->mux, tc, rcp);
+ kfree(tc);
+ } else
+ ret = PTR_ERR(tc);
+
+ return ret;
}
/**
@@ -214,19 +277,21 @@ v9fs_t_walk(struct v9fs_session_info *v9ses, u32 fid, u32 newfid,
int
v9fs_t_open(struct v9fs_session_info *v9ses, u32 fid, u8 mode,
- struct v9fs_fcall **fcall)
+ struct v9fs_fcall **rcp)
{
- struct v9fs_fcall msg;
- long errorno = -1;
+ int ret;
+ struct v9fs_fcall *tc;
dprintk(DEBUG_9P, "fid %d mode %d\n", fid, mode);
- msg.id = TOPEN;
- msg.params.topen.fid = fid;
- msg.params.topen.mode = mode;
- errorno = v9fs_mux_rpc(v9ses, &msg, fcall);
+ tc = v9fs_create_topen(fid, mode);
+ if (!IS_ERR(tc)) {
+ ret = v9fs_mux_rpc(v9ses->mux, tc, rcp);
+ kfree(tc);
+ } else
+ ret = PTR_ERR(tc);
- return errorno;
+ return ret;
}
/**
@@ -239,14 +304,21 @@ v9fs_t_open(struct v9fs_session_info *v9ses, u32 fid, u8 mode,
int
v9fs_t_remove(struct v9fs_session_info *v9ses, u32 fid,
- struct v9fs_fcall **fcall)
+ struct v9fs_fcall **rcp)
{
- struct v9fs_fcall msg;
+ int ret;
+ struct v9fs_fcall *tc;
dprintk(DEBUG_9P, "fid %d\n", fid);
- msg.id = TREMOVE;
- msg.params.tremove.fid = fid;
- return v9fs_mux_rpc(v9ses, &msg, fcall);
+
+ tc = v9fs_create_tremove(fid);
+ if (!IS_ERR(tc)) {
+ ret = v9fs_mux_rpc(v9ses->mux, tc, rcp);
+ kfree(tc);
+ } else
+ ret = PTR_ERR(tc);
+
+ return ret;
}
/**
@@ -262,20 +334,22 @@ v9fs_t_remove(struct v9fs_session_info *v9ses, u32 fid,
int
v9fs_t_create(struct v9fs_session_info *v9ses, u32 fid, char *name,
- u32 perm, u8 mode, struct v9fs_fcall **fcall)
+ u32 perm, u8 mode, struct v9fs_fcall **rcp)
{
- struct v9fs_fcall msg;
+ int ret;
+ struct v9fs_fcall *tc;
dprintk(DEBUG_9P, "fid %d name '%s' perm %x mode %d\n",
fid, name, perm, mode);
- msg.id = TCREATE;
- msg.params.tcreate.fid = fid;
- msg.params.tcreate.name = name;
- msg.params.tcreate.perm = perm;
- msg.params.tcreate.mode = mode;
+ tc = v9fs_create_tcreate(fid, name, perm, mode);
+ if (!IS_ERR(tc)) {
+ ret = v9fs_mux_rpc(v9ses->mux, tc, rcp);
+ kfree(tc);
+ } else
+ ret = PTR_ERR(tc);
- return v9fs_mux_rpc(v9ses, &msg, fcall);
+ return ret;
}
/**
@@ -290,31 +364,29 @@ v9fs_t_create(struct v9fs_session_info *v9ses, u32 fid, char *name,
int
v9fs_t_read(struct v9fs_session_info *v9ses, u32 fid, u64 offset,
- u32 count, struct v9fs_fcall **fcall)
+ u32 count, struct v9fs_fcall **rcp)
{
- struct v9fs_fcall msg;
- struct v9fs_fcall *rc = NULL;
- long errorno = -1;
-
- dprintk(DEBUG_9P, "fid %d offset 0x%lx count 0x%x\n", fid,
- (long unsigned int)offset, count);
- msg.id = TREAD;
- msg.params.tread.fid = fid;
- msg.params.tread.offset = offset;
- msg.params.tread.count = count;
- errorno = v9fs_mux_rpc(v9ses, &msg, &rc);
-
- if (!errorno) {
- errorno = rc->params.rread.count;
- dump_data(rc->params.rread.data, rc->params.rread.count);
- }
-
- if (fcall)
- *fcall = rc;
- else
- kfree(rc);
-
- return errorno;
+ int ret;
+ struct v9fs_fcall *tc, *rc;
+
+ dprintk(DEBUG_9P, "fid %d offset 0x%llux count 0x%x\n", fid,
+ (long long unsigned) offset, count);
+
+ tc = v9fs_create_tread(fid, offset, count);
+ if (!IS_ERR(tc)) {
+ ret = v9fs_mux_rpc(v9ses->mux, tc, &rc);
+ if (!ret)
+ ret = rc->params.rread.count;
+ if (rcp)
+ *rcp = rc;
+ else
+ kfree(rc);
+
+ kfree(tc);
+ } else
+ ret = PTR_ERR(tc);
+
+ return ret;
}
/**
@@ -328,32 +400,30 @@ v9fs_t_read(struct v9fs_session_info *v9ses, u32 fid, u64 offset,
*/
int
-v9fs_t_write(struct v9fs_session_info *v9ses, u32 fid,
- u64 offset, u32 count, void *data, struct v9fs_fcall **fcall)
+v9fs_t_write(struct v9fs_session_info *v9ses, u32 fid, u64 offset, u32 count,
+ const char __user *data, struct v9fs_fcall **rcp)
{
- struct v9fs_fcall msg;
- struct v9fs_fcall *rc = NULL;
- long errorno = -1;
+ int ret;
+ struct v9fs_fcall *tc, *rc;
- dprintk(DEBUG_9P, "fid %d offset 0x%llx count 0x%x\n", fid,
- (unsigned long long)offset, count);
- dump_data(data, count);
+ dprintk(DEBUG_9P, "fid %d offset 0x%llux count 0x%x\n", fid,
+ (long long unsigned) offset, count);
- msg.id = TWRITE;
- msg.params.twrite.fid = fid;
- msg.params.twrite.offset = offset;
- msg.params.twrite.count = count;
- msg.params.twrite.data = data;
+ tc = v9fs_create_twrite(fid, offset, count, data);
+ if (!IS_ERR(tc)) {
+ ret = v9fs_mux_rpc(v9ses->mux, tc, &rc);
- errorno = v9fs_mux_rpc(v9ses, &msg, &rc);
+ if (!ret)
+ ret = rc->params.rwrite.count;
+ if (rcp)
+ *rcp = rc;
+ else
+ kfree(rc);
- if (!errorno)
- errorno = rc->params.rwrite.count;
+ kfree(tc);
+ } else
+ ret = PTR_ERR(tc);
- if (fcall)
- *fcall = rc;
- else
- kfree(rc);
-
- return errorno;
+ return ret;
}
+
diff --git a/fs/9p/9p.h b/fs/9p/9p.h
index f554242..0cd374d 100644
--- a/fs/9p/9p.h
+++ b/fs/9p/9p.h
@@ -3,6 +3,7 @@
*
* 9P protocol definitions.
*
+ * Copyright (C) 2005 by Latchesar Ionkov <lucho@ionkov.net>
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
* Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
*
@@ -100,9 +101,18 @@ enum {
V9FS_QTFILE = 0x00,
};
+#define V9FS_NOTAG (u16)(~0)
+#define V9FS_NOFID (u32)(~0)
+#define V9FS_MAXWELEM 16
+
/* ample room for Twrite/Rread header (iounit) */
#define V9FS_IOHDRSZ 24
+struct v9fs_str {
+ u16 len;
+ char *str;
+};
+
/* qids are the unique ID for a file (like an inode */
struct v9fs_qid {
u8 type;
@@ -120,6 +130,29 @@ struct v9fs_stat {
u32 atime;
u32 mtime;
u64 length;
+ struct v9fs_str name;
+ struct v9fs_str uid;
+ struct v9fs_str gid;
+ struct v9fs_str muid;
+ struct v9fs_str extension; /* 9p2000.u extensions */
+ u32 n_uid; /* 9p2000.u extensions */
+ u32 n_gid; /* 9p2000.u extensions */
+ u32 n_muid; /* 9p2000.u extensions */
+};
+
+/* file metadata (stat) structure used to create Twstat message
+ The is similar to v9fs_stat, but the strings don't point to
+ the same memory block and should be freed separately
+*/
+struct v9fs_wstat {
+ u16 size;
+ u16 type;
+ u32 dev;
+ struct v9fs_qid qid;
+ u32 mode;
+ u32 atime;
+ u32 mtime;
+ u64 length;
char *name;
char *uid;
char *gid;
@@ -128,25 +161,24 @@ struct v9fs_stat {
u32 n_uid; /* 9p2000.u extensions */
u32 n_gid; /* 9p2000.u extensions */
u32 n_muid; /* 9p2000.u extensions */
- char data[0];
};
/* Structures for Protocol Operations */
struct Tversion {
u32 msize;
- char *version;
+ struct v9fs_str version;
};
struct Rversion {
u32 msize;
- char *version;
+ struct v9fs_str version;
};
struct Tauth {
u32 afid;
- char *uname;
- char *aname;
+ struct v9fs_str uname;
+ struct v9fs_str aname;
};
struct Rauth {
@@ -154,12 +186,12 @@ struct Rauth {
};
struct Rerror {
- char *error;
+ struct v9fs_str error;
u32 errno; /* 9p2000.u extension */
};
struct Tflush {
- u32 oldtag;
+ u16 oldtag;
};
struct Rflush {
@@ -168,8 +200,8 @@ struct Rflush {
struct Tattach {
u32 fid;
u32 afid;
- char *uname;
- char *aname;
+ struct v9fs_str uname;
+ struct v9fs_str aname;
};
struct Rattach {
@@ -179,13 +211,13 @@ struct Rattach {
struct Twalk {
u32 fid;
u32 newfid;
- u32 nwname;
- char **wnames;
+ u16 nwname;
+ struct v9fs_str wnames[16];
};
struct Rwalk {
- u32 nwqid;
- struct v9fs_qid *wqids;
+ u16 nwqid;
+ struct v9fs_qid wqids[16];
};
struct Topen {
@@ -200,7 +232,7 @@ struct Ropen {
struct Tcreate {
u32 fid;
- char *name;
+ struct v9fs_str name;
u32 perm;
u8 mode;
};
@@ -251,12 +283,12 @@ struct Tstat {
};
struct Rstat {
- struct v9fs_stat *stat;
+ struct v9fs_stat stat;
};
struct Twstat {
u32 fid;
- struct v9fs_stat *stat;
+ struct v9fs_stat stat;
};
struct Rwstat {
@@ -271,6 +303,7 @@ struct v9fs_fcall {
u32 size;
u8 id;
u16 tag;
+ void *sdata;
union {
struct Tversion tversion;
@@ -303,7 +336,9 @@ struct v9fs_fcall {
} params;
};
-#define FCALL_ERROR(fcall) (fcall ? fcall->params.rerror.error : "")
+#define PRINT_FCALL_ERROR(s, fcall) dprintk(DEBUG_ERROR, "%s: %.*s\n", s, \
+ fcall?fcall->params.rerror.error.len:0, \
+ fcall?fcall->params.rerror.error.str:"");
int v9fs_t_version(struct v9fs_session_info *v9ses, u32 msize,
char *version, struct v9fs_fcall **rcall);
@@ -311,8 +346,7 @@ int v9fs_t_version(struct v9fs_session_info *v9ses, u32 msize,
int v9fs_t_attach(struct v9fs_session_info *v9ses, char *uname, char *aname,
u32 fid, u32 afid, struct v9fs_fcall **rcall);
-int v9fs_t_clunk(struct v9fs_session_info *v9ses, u32 fid,
- struct v9fs_fcall **rcall);
+int v9fs_t_clunk(struct v9fs_session_info *v9ses, u32 fid);
int v9fs_t_flush(struct v9fs_session_info *v9ses, u16 oldtag);
@@ -320,7 +354,7 @@ int v9fs_t_stat(struct v9fs_session_info *v9ses, u32 fid,
struct v9fs_fcall **rcall);
int v9fs_t_wstat(struct v9fs_session_info *v9ses, u32 fid,
- struct v9fs_stat *stat, struct v9fs_fcall **rcall);
+ struct v9fs_wstat *wstat, struct v9fs_fcall **rcall);
int v9fs_t_walk(struct v9fs_session_info *v9ses, u32 fid, u32 newfid,
char *name, struct v9fs_fcall **rcall);
@@ -338,4 +372,5 @@ int v9fs_t_read(struct v9fs_session_info *v9ses, u32 fid,
u64 offset, u32 count, struct v9fs_fcall **rcall);
int v9fs_t_write(struct v9fs_session_info *v9ses, u32 fid, u64 offset,
- u32 count, void *data, struct v9fs_fcall **rcall);
+ u32 count, const char __user * data,
+ struct v9fs_fcall **rcall);
diff --git a/fs/9p/Makefile b/fs/9p/Makefile
index e4e4ffe..3d02308 100644
--- a/fs/9p/Makefile
+++ b/fs/9p/Makefile
@@ -1,17 +1,17 @@
obj-$(CONFIG_9P_FS) := 9p2000.o
9p2000-objs := \
+ trans_fd.o \
+ trans_sock.o \
+ mux.o \
+ 9p.o \
+ conv.o \
vfs_super.o \
vfs_inode.o \
vfs_file.o \
vfs_dir.o \
vfs_dentry.o \
error.o \
- mux.o \
- trans_fd.o \
- trans_sock.o \
- 9p.o \
- conv.o \
v9fs.o \
fid.o
diff --git a/fs/9p/conv.c b/fs/9p/conv.c
index 18121af..55ccfa1 100644
--- a/fs/9p/conv.c
+++ b/fs/9p/conv.c
@@ -30,7 +30,7 @@
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/idr.h>
-
+#include <asm/uaccess.h>
#include "debug.h"
#include "v9fs.h"
#include "9p.h"
@@ -58,12 +58,15 @@ static inline int buf_check_overflow(struct cbuf *buf)
static inline int buf_check_size(struct cbuf *buf, int len)
{
- if (buf->p+len > buf->ep) {
+ if (buf->p + len > buf->ep) {
if (buf->p < buf->ep) {
- eprintk(KERN_ERR, "buffer overflow\n");
+ eprintk(KERN_ERR, "buffer overflow: want %d has %d\n",
+ len, (int)(buf->ep - buf->p));
+ dump_stack();
buf->p = buf->ep + 1;
- return 0;
}
+
+ return 0;
}
return 1;
@@ -127,14 +130,6 @@ static inline void buf_put_string(struct cbuf *buf, const char *s)
buf_put_stringn(buf, s, strlen(s));
}
-static inline void buf_put_data(struct cbuf *buf, void *data, u32 datalen)
-{
- if (buf_check_size(buf, datalen)) {
- memcpy(buf->p, data, datalen);
- buf->p += datalen;
- }
-}
-
static inline u8 buf_get_int8(struct cbuf *buf)
{
u8 ret = 0;
@@ -183,86 +178,37 @@ static inline u64 buf_get_int64(struct cbuf *buf)
return ret;
}
-static inline int
-buf_get_string(struct cbuf *buf, char *data, unsigned int datalen)
-{
- u16 len = 0;
-
- len = buf_get_int16(buf);
- if (!buf_check_overflow(buf) && buf_check_size(buf, len) && len+1>datalen) {
- memcpy(data, buf->p, len);
- data[len] = 0;
- buf->p += len;
- len++;
- }
-
- return len;
-}
-
-static inline char *buf_get_stringb(struct cbuf *buf, struct cbuf *sbuf)
-{
- char *ret;
- u16 len;
-
- ret = NULL;
- len = buf_get_int16(buf);
-
- if (!buf_check_overflow(buf) && buf_check_size(buf, len) &&
- buf_check_size(sbuf, len+1)) {
-
- memcpy(sbuf->p, buf->p, len);
- sbuf->p[len] = 0;
- ret = sbuf->p;
- buf->p += len;
- sbuf->p += len + 1;
- }
-
- return ret;
-}
-
-static inline int buf_get_data(struct cbuf *buf, void *data, int datalen)
+static inline void buf_get_str(struct cbuf *buf, struct v9fs_str *vstr)
{
- int ret = 0;
-
- if (buf_check_size(buf, datalen)) {
- memcpy(data, buf->p, datalen);
- buf->p += datalen;
- ret = datalen;
+ vstr->len = buf_get_int16(buf);
+ if (!buf_check_overflow(buf) && buf_check_size(buf, vstr->len)) {
+ vstr->str = buf->p;
+ buf->p += vstr->len;
+ } else {
+ vstr->len = 0;
+ vstr->str = NULL;
}
-
- return ret;
}
-static inline void *buf_get_datab(struct cbuf *buf, struct cbuf *dbuf,
- int datalen)
+static inline void buf_get_qid(struct cbuf *bufp, struct v9fs_qid *qid)
{
- char *ret = NULL;
- int n = 0;
-
- if (buf_check_size(dbuf, datalen)) {
- n = buf_get_data(buf, dbuf->p, datalen);
- if (n > 0) {
- ret = dbuf->p;
- dbuf->p += n;
- }
- }
-
- return ret;
+ qid->type = buf_get_int8(bufp);
+ qid->version = buf_get_int32(bufp);
+ qid->path = buf_get_int64(bufp);
}
/**
- * v9fs_size_stat - calculate the size of a variable length stat struct
- * @v9ses: session information
+ * v9fs_size_wstat - calculate the size of a variable length stat struct
* @stat: metadata (stat) structure
+ * @extended: non-zero if 9P2000.u
*
*/
-static int v9fs_size_stat(struct v9fs_session_info *v9ses,
- struct v9fs_stat *stat)
+static int v9fs_size_wstat(struct v9fs_wstat *wstat, int extended)
{
int size = 0;
- if (stat == NULL) {
+ if (wstat == NULL) {
eprintk(KERN_ERR, "v9fs_size_stat: got a NULL stat pointer\n");
return 0;
}
@@ -279,82 +225,38 @@ static int v9fs_size_stat(struct v9fs_session_info *v9ses,
8 + /* length[8] */
8; /* minimum sum of string lengths */
- if (stat->name)
- size += strlen(stat->name);
- if (stat->uid)
- size += strlen(stat->uid);
- if (stat->gid)
- size += strlen(stat->gid);
- if (stat->muid)
- size += strlen(stat->muid);
+ if (wstat->name)
+ size += strlen(wstat->name);
+ if (wstat->uid)
+ size += strlen(wstat->uid);
+ if (wstat->gid)
+ size += strlen(wstat->gid);
+ if (wstat->muid)
+ size += strlen(wstat->muid);
- if (v9ses->extended) {
+ if (extended) {
size += 4 + /* n_uid[4] */
4 + /* n_gid[4] */
4 + /* n_muid[4] */
2; /* string length of extension[4] */
- if (stat->extension)
- size += strlen(stat->extension);
+ if (wstat->extension)
+ size += strlen(wstat->extension);
}
return size;
}
/**
- * serialize_stat - safely format a stat structure for transmission
- * @v9ses: session info
- * @stat: metadata (stat) structure
- * @bufp: buffer to serialize structure into
- *
- */
-
-static int
-serialize_stat(struct v9fs_session_info *v9ses, struct v9fs_stat *stat,
- struct cbuf *bufp)
-{
- buf_put_int16(bufp, stat->size);
- buf_put_int16(bufp, stat->type);
- buf_put_int32(bufp, stat->dev);
- buf_put_int8(bufp, stat->qid.type);
- buf_put_int32(bufp, stat->qid.version);
- buf_put_int64(bufp, stat->qid.path);
- buf_put_int32(bufp, stat->mode);
- buf_put_int32(bufp, stat->atime);
- buf_put_int32(bufp, stat->mtime);
- buf_put_int64(bufp, stat->length);
-
- buf_put_string(bufp, stat->name);
- buf_put_string(bufp, stat->uid);
- buf_put_string(bufp, stat->gid);
- buf_put_string(bufp, stat->muid);
-
- if (v9ses->extended) {
- buf_put_string(bufp, stat->extension);
- buf_put_int32(bufp, stat->n_uid);
- buf_put_int32(bufp, stat->n_gid);
- buf_put_int32(bufp, stat->n_muid);
- }
-
- if (buf_check_overflow(bufp))
- return 0;
-
- return stat->size;
-}
-
-/**
- * deserialize_stat - safely decode a recieved metadata (stat) structure
- * @v9ses: session info
+ * buf_get_stat - safely decode a recieved metadata (stat) structure
* @bufp: buffer to deserialize
* @stat: metadata (stat) structure
- * @dbufp: buffer to deserialize variable strings into
+ * @extended: non-zero if 9P2000.u
*
*/
-static inline int
-deserialize_stat(struct v9fs_session_info *v9ses, struct cbuf *bufp,
- struct v9fs_stat *stat, struct cbuf *dbufp)
+static inline void
+buf_get_stat(struct cbuf *bufp, struct v9fs_stat *stat, int extended)
{
-
stat->size = buf_get_int16(bufp);
stat->type = buf_get_int16(bufp);
stat->dev = buf_get_int32(bufp);
@@ -365,282 +267,82 @@ deserialize_stat(struct v9fs_session_info *v9ses, struct cbuf *bufp,
stat->atime = buf_get_int32(bufp);
stat->mtime = buf_get_int32(bufp);
stat->length = buf_get_int64(bufp);
- stat->name = buf_get_stringb(bufp, dbufp);
- stat->uid = buf_get_stringb(bufp, dbufp);
- stat->gid = buf_get_stringb(bufp, dbufp);
- stat->muid = buf_get_stringb(bufp, dbufp);
+ buf_get_str(bufp, &stat->name);
+ buf_get_str(bufp, &stat->uid);
+ buf_get_str(bufp, &stat->gid);
+ buf_get_str(bufp, &stat->muid);
- if (v9ses->extended) {
- stat->extension = buf_get_stringb(bufp, dbufp);
+ if (extended) {
+ buf_get_str(bufp, &stat->extension);
stat->n_uid = buf_get_int32(bufp);
stat->n_gid = buf_get_int32(bufp);
stat->n_muid = buf_get_int32(bufp);
}
-
- if (buf_check_overflow(bufp) || buf_check_overflow(dbufp))
- return 0;
-
- return stat->size + 2;
-}
-
-/**
- * deserialize_statb - wrapper for decoding a received metadata structure
- * @v9ses: session info
- * @bufp: buffer to deserialize
- * @dbufp: buffer to deserialize variable strings into
- *
- */
-
-static inline struct v9fs_stat *deserialize_statb(struct v9fs_session_info
- *v9ses, struct cbuf *bufp,
- struct cbuf *dbufp)
-{
- struct v9fs_stat *ret = buf_alloc(dbufp, sizeof(struct v9fs_stat));
-
- if (ret) {
- int n = deserialize_stat(v9ses, bufp, ret, dbufp);
- if (n <= 0)
- return NULL;
- }
-
- return ret;
}
/**
* v9fs_deserialize_stat - decode a received metadata structure
- * @v9ses: session info
* @buf: buffer to deserialize
* @buflen: length of received buffer
* @stat: metadata structure to decode into
- * @statlen: length of destination metadata structure
+ * @extended: non-zero if 9P2000.u
*
+ * Note: stat will point to the buf region.
*/
int
-v9fs_deserialize_stat(struct v9fs_session_info *v9ses, void *buf,
- u32 buflen, struct v9fs_stat *stat, u32 statlen)
+v9fs_deserialize_stat(void *buf, u32 buflen, struct v9fs_stat *stat,
+ int extended)
{
struct cbuf buffer;
struct cbuf *bufp = &buffer;
- struct cbuf dbuffer;
- struct cbuf *dbufp = &dbuffer;
+ unsigned char *p;
buf_init(bufp, buf, buflen);
- buf_init(dbufp, (char *)stat + sizeof(struct v9fs_stat),
- statlen - sizeof(struct v9fs_stat));
-
- return deserialize_stat(v9ses, bufp, stat, dbufp);
-}
-
-static inline int
-v9fs_size_fcall(struct v9fs_session_info *v9ses, struct v9fs_fcall *fcall)
-{
- int size = 4 + 1 + 2; /* size[4] msg[1] tag[2] */
- int i = 0;
-
- switch (fcall->id) {
- default:
- eprintk(KERN_ERR, "bad msg type %d\n", fcall->id);
- return 0;
- case TVERSION: /* msize[4] version[s] */
- size += 4 + 2 + strlen(fcall->params.tversion.version);
- break;
- case TAUTH: /* afid[4] uname[s] aname[s] */
- size += 4 + 2 + strlen(fcall->params.tauth.uname) +
- 2 + strlen(fcall->params.tauth.aname);
- break;
- case TFLUSH: /* oldtag[2] */
- size += 2;
- break;
- case TATTACH: /* fid[4] afid[4] uname[s] aname[s] */
- size += 4 + 4 + 2 + strlen(fcall->params.tattach.uname) +
- 2 + strlen(fcall->params.tattach.aname);
- break;
- case TWALK: /* fid[4] newfid[4] nwname[2] nwname*(wname[s]) */
- size += 4 + 4 + 2;
- /* now compute total for the array of names */
- for (i = 0; i < fcall->params.twalk.nwname; i++)
- size += 2 + strlen(fcall->params.twalk.wnames[i]);
- break;
- case TOPEN: /* fid[4] mode[1] */
- size += 4 + 1;
- break;
- case TCREATE: /* fid[4] name[s] perm[4] mode[1] */
- size += 4 + 2 + strlen(fcall->params.tcreate.name) + 4 + 1;
- break;
- case TREAD: /* fid[4] offset[8] count[4] */
- size += 4 + 8 + 4;
- break;
- case TWRITE: /* fid[4] offset[8] count[4] data[count] */
- size += 4 + 8 + 4 + fcall->params.twrite.count;
- break;
- case TCLUNK: /* fid[4] */
- size += 4;
- break;
- case TREMOVE: /* fid[4] */
- size += 4;
- break;
- case TSTAT: /* fid[4] */
- size += 4;
- break;
- case TWSTAT: /* fid[4] stat[n] */
- fcall->params.twstat.stat->size =
- v9fs_size_stat(v9ses, fcall->params.twstat.stat);
- size += 4 + 2 + 2 + fcall->params.twstat.stat->size;
- }
- return size;
-}
-
-/*
- * v9fs_serialize_fcall - marshall fcall struct into a packet
- * @v9ses: session information
- * @fcall: structure to convert
- * @data: buffer to serialize fcall into
- * @datalen: length of buffer to serialize fcall into
- *
- */
-
-int
-v9fs_serialize_fcall(struct v9fs_session_info *v9ses, struct v9fs_fcall *fcall,
- void *data, u32 datalen)
-{
- int i = 0;
- struct v9fs_stat *stat = NULL;
- struct cbuf buffer;
- struct cbuf *bufp = &buffer;
-
- buf_init(bufp, data, datalen);
-
- if (!fcall) {
- eprintk(KERN_ERR, "no fcall\n");
- return -EINVAL;
- }
-
- fcall->size = v9fs_size_fcall(v9ses, fcall);
-
- buf_put_int32(bufp, fcall->size);
- buf_put_int8(bufp, fcall->id);
- buf_put_int16(bufp, fcall->tag);
-
- dprintk(DEBUG_CONV, "size %d id %d tag %d\n", fcall->size, fcall->id,
- fcall->tag);
-
- /* now encode it */
- switch (fcall->id) {
- default:
- eprintk(KERN_ERR, "bad msg type: %d\n", fcall->id);
- return -EPROTO;
- case TVERSION:
- buf_put_int32(bufp, fcall->params.tversion.msize);
- buf_put_string(bufp, fcall->params.tversion.version);
- break;
- case TAUTH:
- buf_put_int32(bufp, fcall->params.tauth.afid);
- buf_put_string(bufp, fcall->params.tauth.uname);
- buf_put_string(bufp, fcall->params.tauth.aname);
- break;
- case TFLUSH:
- buf_put_int16(bufp, fcall->params.tflush.oldtag);
- break;
- case TATTACH:
- buf_put_int32(bufp, fcall->params.tattach.fid);
- buf_put_int32(bufp, fcall->params.tattach.afid);
- buf_put_string(bufp, fcall->params.tattach.uname);
- buf_put_string(bufp, fcall->params.tattach.aname);
- break;
- case TWALK:
- buf_put_int32(bufp, fcall->params.twalk.fid);
- buf_put_int32(bufp, fcall->params.twalk.newfid);
- buf_put_int16(bufp, fcall->params.twalk.nwname);
- for (i = 0; i < fcall->params.twalk.nwname; i++)
- buf_put_string(bufp, fcall->params.twalk.wnames[i]);
- break;
- case TOPEN:
- buf_put_int32(bufp, fcall->params.topen.fid);
- buf_put_int8(bufp, fcall->params.topen.mode);
- break;
- case TCREATE:
- buf_put_int32(bufp, fcall->params.tcreate.fid);
- buf_put_string(bufp, fcall->params.tcreate.name);
- buf_put_int32(bufp, fcall->params.tcreate.perm);
- buf_put_int8(bufp, fcall->params.tcreate.mode);
- break;
- case TREAD:
- buf_put_int32(bufp, fcall->params.tread.fid);
- buf_put_int64(bufp, fcall->params.tread.offset);
- buf_put_int32(bufp, fcall->params.tread.count);
- break;
- case TWRITE:
- buf_put_int32(bufp, fcall->params.twrite.fid);
- buf_put_int64(bufp, fcall->params.twrite.offset);
- buf_put_int32(bufp, fcall->params.twrite.count);
- buf_put_data(bufp, fcall->params.twrite.data,
- fcall->params.twrite.count);
- break;
- case TCLUNK:
- buf_put_int32(bufp, fcall->params.tclunk.fid);
- break;
- case TREMOVE:
- buf_put_int32(bufp, fcall->params.tremove.fid);
- break;
- case TSTAT:
- buf_put_int32(bufp, fcall->params.tstat.fid);
- break;
- case TWSTAT:
- buf_put_int32(bufp, fcall->params.twstat.fid);
- stat = fcall->params.twstat.stat;
-
- buf_put_int16(bufp, stat->size + 2);
- serialize_stat(v9ses, stat, bufp);
- break;
- }
+ p = bufp->p;
+ buf_get_stat(bufp, stat, extended);
if (buf_check_overflow(bufp))
- return -EIO;
-
- return fcall->size;
+ return 0;
+ else
+ return bufp->p - p;
}
/**
* deserialize_fcall - unmarshal a response
- * @v9ses: session information
- * @msgsize: size of rcall message
* @buf: recieved buffer
* @buflen: length of received buffer
* @rcall: fcall structure to populate
* @rcalllen: length of fcall structure to populate
+ * @extended: non-zero if 9P2000.u
*
*/
int
-v9fs_deserialize_fcall(struct v9fs_session_info *v9ses, u32 msgsize,
- void *buf, u32 buflen, struct v9fs_fcall *rcall,
- int rcalllen)
+v9fs_deserialize_fcall(void *buf, u32 buflen, struct v9fs_fcall *rcall,
+ int extended)
{
struct cbuf buffer;
struct cbuf *bufp = &buffer;
- struct cbuf dbuffer;
- struct cbuf *dbufp = &dbuffer;
int i = 0;
buf_init(bufp, buf, buflen);
- buf_init(dbufp, (char *)rcall + sizeof(struct v9fs_fcall),
- rcalllen - sizeof(struct v9fs_fcall));
- rcall->size = msgsize;
+ rcall->size = buf_get_int32(bufp);
rcall->id = buf_get_int8(bufp);
rcall->tag = buf_get_int16(bufp);
dprintk(DEBUG_CONV, "size %d id %d tag %d\n", rcall->size, rcall->id,
rcall->tag);
+
switch (rcall->id) {
default:
eprintk(KERN_ERR, "unknown message type: %d\n", rcall->id);
return -EPROTO;
case RVERSION:
rcall->params.rversion.msize = buf_get_int32(bufp);
- rcall->params.rversion.version = buf_get_stringb(bufp, dbufp);
+ buf_get_str(bufp, &rcall->params.rversion.version);
break;
case RFLUSH:
break;
@@ -651,34 +353,27 @@ v9fs_deserialize_fcall(struct v9fs_session_info *v9ses, u32 msgsize,
break;
case RWALK:
rcall->params.rwalk.nwqid = buf_get_int16(bufp);
- rcall->params.rwalk.wqids = buf_alloc(dbufp,
- rcall->params.rwalk.nwqid * sizeof(struct v9fs_qid));
- if (rcall->params.rwalk.wqids)
- for (i = 0; i < rcall->params.rwalk.nwqid; i++) {
- rcall->params.rwalk.wqids[i].type =
- buf_get_int8(bufp);
- rcall->params.rwalk.wqids[i].version =
- buf_get_int16(bufp);
- rcall->params.rwalk.wqids[i].path =
- buf_get_int64(bufp);
- }
+ if (rcall->params.rwalk.nwqid > V9FS_MAXWELEM) {
+ eprintk(KERN_ERR, "Rwalk with more than %d qids: %d\n",
+ V9FS_MAXWELEM, rcall->params.rwalk.nwqid);
+ return -EPROTO;
+ }
+
+ for (i = 0; i < rcall->params.rwalk.nwqid; i++)
+ buf_get_qid(bufp, &rcall->params.rwalk.wqids[i]);
break;
case ROPEN:
- rcall->params.ropen.qid.type = buf_get_int8(bufp);
- rcall->params.ropen.qid.version = buf_get_int32(bufp);
- rcall->params.ropen.qid.path = buf_get_int64(bufp);
+ buf_get_qid(bufp, &rcall->params.ropen.qid);
rcall->params.ropen.iounit = buf_get_int32(bufp);
break;
case RCREATE:
- rcall->params.rcreate.qid.type = buf_get_int8(bufp);
- rcall->params.rcreate.qid.version = buf_get_int32(bufp);
- rcall->params.rcreate.qid.path = buf_get_int64(bufp);
+ buf_get_qid(bufp, &rcall->params.rcreate.qid);
rcall->params.rcreate.iounit = buf_get_int32(bufp);
break;
case RREAD:
rcall->params.rread.count = buf_get_int32(bufp);
- rcall->params.rread.data = buf_get_datab(bufp, dbufp,
- rcall->params.rread.count);
+ rcall->params.rread.data = bufp->p;
+ buf_check_size(bufp, rcall->params.rread.count);
break;
case RWRITE:
rcall->params.rwrite.count = buf_get_int32(bufp);
@@ -689,20 +384,443 @@ v9fs_deserialize_fcall(struct v9fs_session_info *v9ses, u32 msgsize,
break;
case RSTAT:
buf_get_int16(bufp);
- rcall->params.rstat.stat =
- deserialize_statb(v9ses, bufp, dbufp);
+ buf_get_stat(bufp, &rcall->params.rstat.stat, extended);
break;
case RWSTAT:
break;
case RERROR:
- rcall->params.rerror.error = buf_get_stringb(bufp, dbufp);
- if (v9ses->extended)
+ buf_get_str(bufp, &rcall->params.rerror.error);
+ if (extended)
rcall->params.rerror.errno = buf_get_int16(bufp);
break;
}
- if (buf_check_overflow(bufp) || buf_check_overflow(dbufp))
+ if (buf_check_overflow(bufp)) {
+ dprintk(DEBUG_ERROR, "buffer overflow\n");
return -EIO;
+ }
+
+ return bufp->p - bufp->sp;
+}
+
+static inline void v9fs_put_int8(struct cbuf *bufp, u8 val, u8 * p)
+{
+ *p = val;
+ buf_put_int8(bufp, val);
+}
+
+static inline void v9fs_put_int16(struct cbuf *bufp, u16 val, u16 * p)
+{
+ *p = val;
+ buf_put_int16(bufp, val);
+}
+
+static inline void v9fs_put_int32(struct cbuf *bufp, u32 val, u32 * p)
+{
+ *p = val;
+ buf_put_int32(bufp, val);
+}
+
+static inline void v9fs_put_int64(struct cbuf *bufp, u64 val, u64 * p)
+{
+ *p = val;
+ buf_put_int64(bufp, val);
+}
- return rcall->size;
+static inline void
+v9fs_put_str(struct cbuf *bufp, char *data, struct v9fs_str *str)
+{
+ if (data) {
+ str->len = strlen(data);
+ str->str = bufp->p;
+ } else {
+ str->len = 0;
+ str->str = NULL;
+ }
+
+ buf_put_stringn(bufp, data, str->len);
+}
+
+static inline int
+v9fs_put_user_data(struct cbuf *bufp, const char __user * data, int count,
+ unsigned char **pdata)
+{
+ *pdata = buf_alloc(bufp, count);
+ return copy_from_user(*pdata, data, count);
+}
+
+static void
+v9fs_put_wstat(struct cbuf *bufp, struct v9fs_wstat *wstat,
+ struct v9fs_stat *stat, int statsz, int extended)
+{
+ v9fs_put_int16(bufp, statsz, &stat->size);
+ v9fs_put_int16(bufp, wstat->type, &stat->type);
+ v9fs_put_int32(bufp, wstat->dev, &stat->dev);
+ v9fs_put_int8(bufp, wstat->qid.type, &stat->qid.type);
+ v9fs_put_int32(bufp, wstat->qid.version, &stat->qid.version);
+ v9fs_put_int64(bufp, wstat->qid.path, &stat->qid.path);
+ v9fs_put_int32(bufp, wstat->mode, &stat->mode);
+ v9fs_put_int32(bufp, wstat->atime, &stat->atime);
+ v9fs_put_int32(bufp, wstat->mtime, &stat->mtime);
+ v9fs_put_int64(bufp, wstat->length, &stat->length);
+
+ v9fs_put_str(bufp, wstat->name, &stat->name);
+ v9fs_put_str(bufp, wstat->uid, &stat->uid);
+ v9fs_put_str(bufp, wstat->gid, &stat->gid);
+ v9fs_put_str(bufp, wstat->muid, &stat->muid);
+
+ if (extended) {
+ v9fs_put_str(bufp, wstat->extension, &stat->extension);
+ v9fs_put_int32(bufp, wstat->n_uid, &stat->n_uid);
+ v9fs_put_int32(bufp, wstat->n_gid, &stat->n_gid);
+ v9fs_put_int32(bufp, wstat->n_muid, &stat->n_muid);
+ }
+}
+
+static struct v9fs_fcall *
+v9fs_create_common(struct cbuf *bufp, u32 size, u8 id)
+{
+ struct v9fs_fcall *fc;
+
+ size += 4 + 1 + 2; /* size[4] id[1] tag[2] */
+ fc = kmalloc(sizeof(struct v9fs_fcall) + size, GFP_KERNEL);
+ if (!fc)
+ return ERR_PTR(-ENOMEM);
+
+ fc->sdata = (char *)fc + sizeof(*fc);
+
+ buf_init(bufp, (char *)fc->sdata, size);
+ v9fs_put_int32(bufp, size, &fc->size);
+ v9fs_put_int8(bufp, id, &fc->id);
+ v9fs_put_int16(bufp, V9FS_NOTAG, &fc->tag);
+
+ return fc;
+}
+
+void v9fs_set_tag(struct v9fs_fcall *fc, u16 tag)
+{
+ fc->tag = tag;
+ *(__le16 *) (fc->sdata + 5) = cpu_to_le16(tag);
+}
+
+struct v9fs_fcall *v9fs_create_tversion(u32 msize, char *version)
+{
+ int size;
+ struct v9fs_fcall *fc;
+ struct cbuf buffer;
+ struct cbuf *bufp = &buffer;
+
+ size = 4 + 2 + strlen(version); /* msize[4] version[s] */
+ fc = v9fs_create_common(bufp, size, TVERSION);
+ if (IS_ERR(fc))
+ goto error;
+
+ v9fs_put_int32(bufp, msize, &fc->params.tversion.msize);
+ v9fs_put_str(bufp, version, &fc->params.tversion.version);
+
+ if (buf_check_overflow(bufp)) {
+ kfree(fc);
+ fc = ERR_PTR(-ENOMEM);
+ }
+ error:
+ return fc;
+}
+
+struct v9fs_fcall *v9fs_create_tauth(u32 afid, char *uname, char *aname)
+{
+ int size;
+ struct v9fs_fcall *fc;
+ struct cbuf buffer;
+ struct cbuf *bufp = &buffer;
+
+ size = 4 + 2 + strlen(uname) + 2 + strlen(aname); /* afid[4] uname[s] aname[s] */
+ fc = v9fs_create_common(bufp, size, TAUTH);
+ if (IS_ERR(fc))
+ goto error;
+
+ v9fs_put_int32(bufp, afid, &fc->params.tauth.afid);
+ v9fs_put_str(bufp, uname, &fc->params.tauth.uname);
+ v9fs_put_str(bufp, aname, &fc->params.tauth.aname);
+
+ if (buf_check_overflow(bufp)) {
+ kfree(fc);
+ fc = ERR_PTR(-ENOMEM);
+ }
+ error:
+ return fc;
+}
+
+struct v9fs_fcall *
+v9fs_create_tattach(u32 fid, u32 afid, char *uname, char *aname)
+{
+ int size;
+ struct v9fs_fcall *fc;
+ struct cbuf buffer;
+ struct cbuf *bufp = &buffer;
+
+ size = 4 + 4 + 2 + strlen(uname) + 2 + strlen(aname); /* fid[4] afid[4] uname[s] aname[s] */
+ fc = v9fs_create_common(bufp, size, TATTACH);
+ if (IS_ERR(fc))
+ goto error;
+
+ v9fs_put_int32(bufp, fid, &fc->params.tattach.fid);
+ v9fs_put_int32(bufp, afid, &fc->params.tattach.afid);
+ v9fs_put_str(bufp, uname, &fc->params.tattach.uname);
+ v9fs_put_str(bufp, aname, &fc->params.tattach.aname);
+
+ error:
+ return fc;
+}
+
+struct v9fs_fcall *v9fs_create_tflush(u16 oldtag)
+{
+ int size;
+ struct v9fs_fcall *fc;
+ struct cbuf buffer;
+ struct cbuf *bufp = &buffer;
+
+ size = 2; /* oldtag[2] */
+ fc = v9fs_create_common(bufp, size, TFLUSH);
+ if (IS_ERR(fc))
+ goto error;
+
+ v9fs_put_int16(bufp, oldtag, &fc->params.tflush.oldtag);
+
+ if (buf_check_overflow(bufp)) {
+ kfree(fc);
+ fc = ERR_PTR(-ENOMEM);
+ }
+ error:
+ return fc;
+}
+
+struct v9fs_fcall *v9fs_create_twalk(u32 fid, u32 newfid, u16 nwname,
+ char **wnames)
+{
+ int i, size;
+ struct v9fs_fcall *fc;
+ struct cbuf buffer;
+ struct cbuf *bufp = &buffer;
+
+ if (nwname > V9FS_MAXWELEM) {
+ dprintk(DEBUG_ERROR, "nwname > %d\n", V9FS_MAXWELEM);
+ return NULL;
+ }
+
+ size = 4 + 4 + 2; /* fid[4] newfid[4] nwname[2] ... */
+ for (i = 0; i < nwname; i++) {
+ size += 2 + strlen(wnames[i]); /* wname[s] */
+ }
+
+ fc = v9fs_create_common(bufp, size, TWALK);
+ if (IS_ERR(fc))
+ goto error;
+
+ v9fs_put_int32(bufp, fid, &fc->params.twalk.fid);
+ v9fs_put_int32(bufp, newfid, &fc->params.twalk.newfid);
+ v9fs_put_int16(bufp, nwname, &fc->params.twalk.nwname);
+ for (i = 0; i < nwname; i++) {
+ v9fs_put_str(bufp, wnames[i], &fc->params.twalk.wnames[i]);
+ }
+
+ if (buf_check_overflow(bufp)) {
+ kfree(fc);
+ fc = ERR_PTR(-ENOMEM);
+ }
+ error:
+ return fc;
+}
+
+struct v9fs_fcall *v9fs_create_topen(u32 fid, u8 mode)
+{
+ int size;
+ struct v9fs_fcall *fc;
+ struct cbuf buffer;
+ struct cbuf *bufp = &buffer;
+
+ size = 4 + 1; /* fid[4] mode[1] */
+ fc = v9fs_create_common(bufp, size, TOPEN);
+ if (IS_ERR(fc))
+ goto error;
+
+ v9fs_put_int32(bufp, fid, &fc->params.topen.fid);
+ v9fs_put_int8(bufp, mode, &fc->params.topen.mode);
+
+ if (buf_check_overflow(bufp)) {
+ kfree(fc);
+ fc = ERR_PTR(-ENOMEM);
+ }
+ error:
+ return fc;
+}
+
+struct v9fs_fcall *v9fs_create_tcreate(u32 fid, char *name, u32 perm, u8 mode)
+{
+ int size;
+ struct v9fs_fcall *fc;
+ struct cbuf buffer;
+ struct cbuf *bufp = &buffer;
+
+ size = 4 + 2 + strlen(name) + 4 + 1; /* fid[4] name[s] perm[4] mode[1] */
+ fc = v9fs_create_common(bufp, size, TCREATE);
+ if (IS_ERR(fc))
+ goto error;
+
+ v9fs_put_int32(bufp, fid, &fc->params.tcreate.fid);
+ v9fs_put_str(bufp, name, &fc->params.tcreate.name);
+ v9fs_put_int32(bufp, perm, &fc->params.tcreate.perm);
+ v9fs_put_int8(bufp, mode, &fc->params.tcreate.mode);
+
+ if (buf_check_overflow(bufp)) {
+ kfree(fc);
+ fc = ERR_PTR(-ENOMEM);
+ }
+ error:
+ return fc;
+}
+
+struct v9fs_fcall *v9fs_create_tread(u32 fid, u64 offset, u32 count)
+{
+ int size;
+ struct v9fs_fcall *fc;
+ struct cbuf buffer;
+ struct cbuf *bufp = &buffer;
+
+ size = 4 + 8 + 4; /* fid[4] offset[8] count[4] */
+ fc = v9fs_create_common(bufp, size, TREAD);
+ if (IS_ERR(fc))
+ goto error;
+
+ v9fs_put_int32(bufp, fid, &fc->params.tread.fid);
+ v9fs_put_int64(bufp, offset, &fc->params.tread.offset);
+ v9fs_put_int32(bufp, count, &fc->params.tread.count);
+
+ if (buf_check_overflow(bufp)) {
+ kfree(fc);
+ fc = ERR_PTR(-ENOMEM);
+ }
+ error:
+ return fc;
+}
+
+struct v9fs_fcall *v9fs_create_twrite(u32 fid, u64 offset, u32 count,
+ const char __user * data)
+{
+ int size, err;
+ struct v9fs_fcall *fc;
+ struct cbuf buffer;
+ struct cbuf *bufp = &buffer;
+
+ size = 4 + 8 + 4 + count; /* fid[4] offset[8] count[4] data[count] */
+ fc = v9fs_create_common(bufp, size, TWRITE);
+ if (IS_ERR(fc))
+ goto error;
+
+ v9fs_put_int32(bufp, fid, &fc->params.twrite.fid);
+ v9fs_put_int64(bufp, offset, &fc->params.twrite.offset);
+ v9fs_put_int32(bufp, count, &fc->params.twrite.count);
+ err = v9fs_put_user_data(bufp, data, count, &fc->params.twrite.data);
+ if (err) {
+ kfree(fc);
+ fc = ERR_PTR(err);
+ }
+
+ if (buf_check_overflow(bufp)) {
+ kfree(fc);
+ fc = ERR_PTR(-ENOMEM);
+ }
+ error:
+ return fc;
+}
+
+struct v9fs_fcall *v9fs_create_tclunk(u32 fid)
+{
+ int size;
+ struct v9fs_fcall *fc;
+ struct cbuf buffer;
+ struct cbuf *bufp = &buffer;
+
+ size = 4; /* fid[4] */
+ fc = v9fs_create_common(bufp, size, TCLUNK);
+ if (IS_ERR(fc))
+ goto error;
+
+ v9fs_put_int32(bufp, fid, &fc->params.tclunk.fid);
+
+ if (buf_check_overflow(bufp)) {
+ kfree(fc);
+ fc = ERR_PTR(-ENOMEM);
+ }
+ error:
+ return fc;
+}
+
+struct v9fs_fcall *v9fs_create_tremove(u32 fid)
+{
+ int size;
+ struct v9fs_fcall *fc;
+ struct cbuf buffer;
+ struct cbuf *bufp = &buffer;
+
+ size = 4; /* fid[4] */
+ fc = v9fs_create_common(bufp, size, TREMOVE);
+ if (IS_ERR(fc))
+ goto error;
+
+ v9fs_put_int32(bufp, fid, &fc->params.tremove.fid);
+
+ if (buf_check_overflow(bufp)) {
+ kfree(fc);
+ fc = ERR_PTR(-ENOMEM);
+ }
+ error:
+ return fc;
+}
+
+struct v9fs_fcall *v9fs_create_tstat(u32 fid)
+{
+ int size;
+ struct v9fs_fcall *fc;
+ struct cbuf buffer;
+ struct cbuf *bufp = &buffer;
+
+ size = 4; /* fid[4] */
+ fc = v9fs_create_common(bufp, size, TSTAT);
+ if (IS_ERR(fc))
+ goto error;
+
+ v9fs_put_int32(bufp, fid, &fc->params.tstat.fid);
+
+ if (buf_check_overflow(bufp)) {
+ kfree(fc);
+ fc = ERR_PTR(-ENOMEM);
+ }
+ error:
+ return fc;
+}
+
+struct v9fs_fcall *v9fs_create_twstat(u32 fid, struct v9fs_wstat *wstat,
+ int extended)
+{
+ int size, statsz;
+ struct v9fs_fcall *fc;
+ struct cbuf buffer;
+ struct cbuf *bufp = &buffer;
+
+ statsz = v9fs_size_wstat(wstat, extended);
+ size = 4 + 2 + 2 + statsz; /* fid[4] stat[n] */
+ fc = v9fs_create_common(bufp, size, TWSTAT);
+ if (IS_ERR(fc))
+ goto error;
+
+ v9fs_put_int32(bufp, fid, &fc->params.twstat.fid);
+ buf_put_int16(bufp, statsz + 2);
+ v9fs_put_wstat(bufp, wstat, &fc->params.twstat.stat, statsz, extended);
+
+ if (buf_check_overflow(bufp)) {
+ kfree(fc);
+ fc = ERR_PTR(-ENOMEM);
+ }
+ error:
+ return fc;
}
diff --git a/fs/9p/conv.h b/fs/9p/conv.h
index ee84961..26a736e 100644
--- a/fs/9p/conv.h
+++ b/fs/9p/conv.h
@@ -1,8 +1,9 @@
/*
* linux/fs/9p/conv.h
*
- * 9P protocol conversion definitions
+ * 9P protocol conversion definitions.
*
+ * Copyright (C) 2005 by Latchesar Ionkov <lucho@ionkov.net>
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
* Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
*
@@ -24,13 +25,27 @@
*
*/
-int v9fs_deserialize_stat(struct v9fs_session_info *, void *buf,
- u32 buflen, struct v9fs_stat *stat, u32 statlen);
-int v9fs_serialize_fcall(struct v9fs_session_info *, struct v9fs_fcall *tcall,
- void *buf, u32 buflen);
-int v9fs_deserialize_fcall(struct v9fs_session_info *, u32 msglen,
- void *buf, u32 buflen, struct v9fs_fcall *rcall,
- int rcalllen);
+int v9fs_deserialize_stat(void *buf, u32 buflen, struct v9fs_stat *stat,
+ int extended);
+int v9fs_deserialize_fcall(void *buf, u32 buflen, struct v9fs_fcall *rcall,
+ int extended);
-/* this one is actually in error.c right now */
-int v9fs_errstr2errno(char *errstr);
+void v9fs_set_tag(struct v9fs_fcall *fc, u16 tag);
+
+struct v9fs_fcall *v9fs_create_tversion(u32 msize, char *version);
+struct v9fs_fcall *v9fs_create_tauth(u32 afid, char *uname, char *aname);
+struct v9fs_fcall *v9fs_create_tattach(u32 fid, u32 afid, char *uname,
+ char *aname);
+struct v9fs_fcall *v9fs_create_tflush(u16 oldtag);
+struct v9fs_fcall *v9fs_create_twalk(u32 fid, u32 newfid, u16 nwname,
+ char **wnames);
+struct v9fs_fcall *v9fs_create_topen(u32 fid, u8 mode);
+struct v9fs_fcall *v9fs_create_tcreate(u32 fid, char *name, u32 perm, u8 mode);
+struct v9fs_fcall *v9fs_create_tread(u32 fid, u64 offset, u32 count);
+struct v9fs_fcall *v9fs_create_twrite(u32 fid, u64 offset, u32 count,
+ const char __user *data);
+struct v9fs_fcall *v9fs_create_tclunk(u32 fid);
+struct v9fs_fcall *v9fs_create_tremove(u32 fid);
+struct v9fs_fcall *v9fs_create_tstat(u32 fid);
+struct v9fs_fcall *v9fs_create_twstat(u32 fid, struct v9fs_wstat *wstat,
+ int extended);
diff --git a/fs/9p/debug.h b/fs/9p/debug.h
index 4445f06..fe55103 100644
--- a/fs/9p/debug.h
+++ b/fs/9p/debug.h
@@ -51,16 +51,23 @@ do { \
#if DEBUG_DUMP_PKT
static inline void dump_data(const unsigned char *data, unsigned int datalen)
{
- int i, j;
- int len = datalen;
+ int i, n;
+ char buf[5*8];
- printk(KERN_DEBUG "data ");
- for (i = 0; i < len; i += 4) {
- for (j = 0; (j < 4) && (i + j < len); j++)
- printk(KERN_DEBUG "%02x", data[i + j]);
- printk(KERN_DEBUG " ");
+ n = 0;
+ i = 0;
+ while (i < datalen) {
+ n += snprintf(buf+n, sizeof(buf)-n, "%02x", data[i++]);
+ if (i%4 == 0)
+ n += snprintf(buf+n, sizeof(buf)-n, " ");
+
+ if (i%16 == 0) {
+ dprintk(DEBUG_ERROR, "%s\n", buf);
+ n = 0;
+ }
}
- printk(KERN_DEBUG "\n");
+
+ dprintk(DEBUG_ERROR, "%s\n", buf);
}
#else /* DEBUG_DUMP_PKT */
static inline void dump_data(const unsigned char *data, unsigned int datalen)
diff --git a/fs/9p/error.c b/fs/9p/error.c
index 834cb17..e4b6f8f 100644
--- a/fs/9p/error.c
+++ b/fs/9p/error.c
@@ -33,7 +33,6 @@
#include <linux/list.h>
#include <linux/jhash.h>
-#include <linux/string.h>
#include "debug.h"
#include "error.h"
@@ -55,7 +54,8 @@ int v9fs_error_init(void)
/* load initial error map into hash table */
for (c = errmap; c->name != NULL; c++) {
- bucket = jhash(c->name, strlen(c->name), 0) % ERRHASHSZ;
+ c->namelen = strlen(c->name);
+ bucket = jhash(c->name, c->namelen, 0) % ERRHASHSZ;
INIT_HLIST_NODE(&c->list);
hlist_add_head(&c->list, &hash_errmap[bucket]);
}
@@ -69,15 +69,15 @@ int v9fs_error_init(void)
*
*/
-int v9fs_errstr2errno(char *errstr)
+int v9fs_errstr2errno(char *errstr, int len)
{
int errno = 0;
struct hlist_node *p = NULL;
struct errormap *c = NULL;
- int bucket = jhash(errstr, strlen(errstr), 0) % ERRHASHSZ;
+ int bucket = jhash(errstr, len, 0) % ERRHASHSZ;
hlist_for_each_entry(c, p, &hash_errmap[bucket], list) {
- if (!strcmp(c->name, errstr)) {
+ if (c->namelen==len && !memcmp(c->name, errstr, len)) {
errno = c->val;
break;
}
diff --git a/fs/9p/error.h b/fs/9p/error.h
index 78f89ac..a9794e8 100644
--- a/fs/9p/error.h
+++ b/fs/9p/error.h
@@ -36,6 +36,7 @@ struct errormap {
char *name;
int val;
+ int namelen;
struct hlist_node list;
};
@@ -175,4 +176,3 @@ static struct errormap errmap[] = {
};
extern int v9fs_error_init(void);
-extern int v9fs_errstr2errno(char *errstr);
diff --git a/fs/9p/fid.c b/fs/9p/fid.c
index d95f862..eda4497 100644
--- a/fs/9p/fid.c
+++ b/fs/9p/fid.c
@@ -31,9 +31,6 @@
#include "v9fs.h"
#include "9p.h"
#include "v9fs_vfs.h"
-#include "transport.h"
-#include "mux.h"
-#include "conv.h"
#include "fid.h"
/**
@@ -164,7 +161,7 @@ static struct v9fs_fid *v9fs_fid_walk_up(struct dentry *dentry)
return v9fs_fid_create(dentry, v9ses, fidnum, 0);
clunk_fid:
- v9fs_t_clunk(v9ses, fidnum, NULL);
+ v9fs_t_clunk(v9ses, fidnum);
return ERR_PTR(err);
}
diff --git a/fs/9p/mux.c b/fs/9p/mux.c
index 8835b57..945cb36 100644
--- a/fs/9p/mux.c
+++ b/fs/9p/mux.c
@@ -4,7 +4,7 @@
* Protocol Multiplexer
*
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
- * Copyright (C) 2004 by Latchesar Ionkov <lucho@ionkov.net>
+ * Copyright (C) 2004-2005 by Latchesar Ionkov <lucho@ionkov.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -28,448 +28,943 @@
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/fs.h>
+#include <linux/poll.h>
#include <linux/kthread.h>
#include <linux/idr.h>
#include "debug.h"
#include "v9fs.h"
#include "9p.h"
-#include "transport.h"
#include "conv.h"
+#include "transport.h"
#include "mux.h"
+#define ERREQFLUSH 1
+#define SCHED_TIMEOUT 10
+#define MAXPOLLWADDR 2
+
+enum {
+ Rworksched = 1, /* read work scheduled or running */
+ Rpending = 2, /* can read */
+ Wworksched = 4, /* write work scheduled or running */
+ Wpending = 8, /* can write */
+};
+
+struct v9fs_mux_poll_task;
+
+struct v9fs_req {
+ int tag;
+ struct v9fs_fcall *tcall;
+ struct v9fs_fcall *rcall;
+ int err;
+ v9fs_mux_req_callback cb;
+ void *cba;
+ struct list_head req_list;
+};
+
+struct v9fs_mux_data {
+ spinlock_t lock;
+ struct list_head mux_list;
+ struct v9fs_mux_poll_task *poll_task;
+ int msize;
+ unsigned char *extended;
+ struct v9fs_transport *trans;
+ struct v9fs_idpool tidpool;
+ int err;
+ wait_queue_head_t equeue;
+ struct list_head req_list;
+ struct list_head unsent_req_list;
+ struct v9fs_fcall *rcall;
+ int rpos;
+ char *rbuf;
+ int wpos;
+ int wsize;
+ char *wbuf;
+ wait_queue_t poll_wait[MAXPOLLWADDR];
+ wait_queue_head_t *poll_waddr[MAXPOLLWADDR];
+ poll_table pt;
+ struct work_struct rq;
+ struct work_struct wq;
+ unsigned long wsched;
+};
+
+struct v9fs_mux_poll_task {
+ struct task_struct *task;
+ struct list_head mux_list;
+ int muxnum;
+};
+
+struct v9fs_mux_rpc {
+ struct v9fs_mux_data *m;
+ struct v9fs_req *req;
+ int err;
+ struct v9fs_fcall *rcall;
+ wait_queue_head_t wqueue;
+};
+
+static int v9fs_poll_proc(void *);
+static void v9fs_read_work(void *);
+static void v9fs_write_work(void *);
+static void v9fs_pollwait(struct file *filp, wait_queue_head_t * wait_address,
+ poll_table * p);
+static u16 v9fs_mux_get_tag(struct v9fs_mux_data *);
+static void v9fs_mux_put_tag(struct v9fs_mux_data *, u16);
+
+static DECLARE_MUTEX(v9fs_mux_task_lock);
+static struct workqueue_struct *v9fs_mux_wq;
+
+static int v9fs_mux_num;
+static int v9fs_mux_poll_task_num;
+static struct v9fs_mux_poll_task v9fs_mux_poll_tasks[100];
+
+int v9fs_mux_global_init(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(v9fs_mux_poll_tasks); i++)
+ v9fs_mux_poll_tasks[i].task = NULL;
+
+ v9fs_mux_wq = create_workqueue("v9fs");
+ if (!v9fs_mux_wq)
+ return -ENOMEM;
+
+ return 0;
+}
+
+void v9fs_mux_global_exit(void)
+{
+ destroy_workqueue(v9fs_mux_wq);
+}
+
/**
- * dprintcond - print condition of session info
- * @v9ses: session info structure
- * @req: RPC request structure
+ * v9fs_mux_calc_poll_procs - calculates the number of polling procs
+ * based on the number of mounted v9fs filesystems.
*
+ * The current implementation returns sqrt of the number of mounts.
*/
+inline int v9fs_mux_calc_poll_procs(int muxnum)
+{
+ int n;
+
+ if (v9fs_mux_poll_task_num)
+ n = muxnum / v9fs_mux_poll_task_num +
+ (muxnum % v9fs_mux_poll_task_num ? 1 : 0);
+ else
+ n = 1;
+
+ if (n > ARRAY_SIZE(v9fs_mux_poll_tasks))
+ n = ARRAY_SIZE(v9fs_mux_poll_tasks);
+
+ return n;
+}
-static inline int
-dprintcond(struct v9fs_session_info *v9ses, struct v9fs_rpcreq *req)
+static int v9fs_mux_poll_start(struct v9fs_mux_data *m)
{
- dprintk(DEBUG_MUX, "condition: %d, %p\n", v9ses->transport->status,
- req->rcall);
+ int i, n;
+ struct v9fs_mux_poll_task *vpt, *vptlast;
+ struct task_struct *pproc;
+
+ dprintk(DEBUG_MUX, "mux %p muxnum %d procnum %d\n", m, v9fs_mux_num,
+ v9fs_mux_poll_task_num);
+ up(&v9fs_mux_task_lock);
+
+ n = v9fs_mux_calc_poll_procs(v9fs_mux_num + 1);
+ if (n > v9fs_mux_poll_task_num) {
+ for (i = 0; i < ARRAY_SIZE(v9fs_mux_poll_tasks); i++) {
+ if (v9fs_mux_poll_tasks[i].task == NULL) {
+ vpt = &v9fs_mux_poll_tasks[i];
+ dprintk(DEBUG_MUX, "create proc %p\n", vpt);
+ pproc = kthread_create(v9fs_poll_proc, vpt,
+ "v9fs-poll");
+
+ if (!IS_ERR(pproc)) {
+ vpt->task = pproc;
+ INIT_LIST_HEAD(&vpt->mux_list);
+ vpt->muxnum = 0;
+ v9fs_mux_poll_task_num++;
+ wake_up_process(vpt->task);
+ }
+ break;
+ }
+ }
+
+ if (i >= ARRAY_SIZE(v9fs_mux_poll_tasks))
+ dprintk(DEBUG_ERROR, "warning: no free poll slots\n");
+ }
+
+ n = (v9fs_mux_num + 1) / v9fs_mux_poll_task_num +
+ ((v9fs_mux_num + 1) % v9fs_mux_poll_task_num ? 1 : 0);
+
+ vptlast = NULL;
+ for (i = 0; i < ARRAY_SIZE(v9fs_mux_poll_tasks); i++) {
+ vpt = &v9fs_mux_poll_tasks[i];
+ if (vpt->task != NULL) {
+ vptlast = vpt;
+ if (vpt->muxnum < n) {
+ dprintk(DEBUG_MUX, "put in proc %d\n", i);
+ list_add(&m->mux_list, &vpt->mux_list);
+ vpt->muxnum++;
+ m->poll_task = vpt;
+ memset(&m->poll_waddr, 0, sizeof(m->poll_waddr));
+ init_poll_funcptr(&m->pt, v9fs_pollwait);
+ break;
+ }
+ }
+ }
+
+ if (i >= ARRAY_SIZE(v9fs_mux_poll_tasks)) {
+ if (vptlast == NULL)
+ return -ENOMEM;
+
+ dprintk(DEBUG_MUX, "put in proc %d\n", i);
+ list_add(&m->mux_list, &vptlast->mux_list);
+ vptlast->muxnum++;
+ m->poll_task = vptlast;
+ memset(&m->poll_waddr, 0, sizeof(m->poll_waddr));
+ init_poll_funcptr(&m->pt, v9fs_pollwait);
+ }
+
+ v9fs_mux_num++;
+ down(&v9fs_mux_task_lock);
+
return 0;
}
+static void v9fs_mux_poll_stop(struct v9fs_mux_data *m)
+{
+ int i;
+ struct v9fs_mux_poll_task *vpt;
+
+ up(&v9fs_mux_task_lock);
+ vpt = m->poll_task;
+ list_del(&m->mux_list);
+ for(i = 0; i < ARRAY_SIZE(m->poll_waddr); i++) {
+ if (m->poll_waddr[i] != NULL) {
+ remove_wait_queue(m->poll_waddr[i], &m->poll_wait[i]);
+ m->poll_waddr[i] = NULL;
+ }
+ }
+ vpt->muxnum--;
+ if (!vpt->muxnum) {
+ dprintk(DEBUG_MUX, "destroy proc %p\n", vpt);
+ send_sig(SIGKILL, vpt->task, 1);
+ vpt->task = NULL;
+ v9fs_mux_poll_task_num--;
+ }
+ v9fs_mux_num--;
+ down(&v9fs_mux_task_lock);
+}
+
/**
- * xread - force read of a certain number of bytes
- * @v9ses: session info structure
- * @ptr: pointer to buffer
- * @sz: number of bytes to read
+ * v9fs_mux_init - allocate and initialize the per-session mux data
+ * Creates the polling task if this is the first session.
*
- * Chuck Cranor CS-533 project1
+ * @trans - transport structure
+ * @msize - maximum message size
+ * @extended - pointer to the extended flag
*/
-
-static int xread(struct v9fs_session_info *v9ses, void *ptr, unsigned long sz)
+struct v9fs_mux_data *v9fs_mux_init(struct v9fs_transport *trans, int msize,
+ unsigned char *extended)
{
- int rd = 0;
- int ret = 0;
- while (rd < sz) {
- ret = v9ses->transport->read(v9ses->transport, ptr, sz - rd);
- if (ret <= 0) {
- dprintk(DEBUG_ERROR, "xread errno %d\n", ret);
- return ret;
+ int i, n;
+ struct v9fs_mux_data *m, *mtmp;
+
+ dprintk(DEBUG_MUX, "transport %p msize %d\n", trans, msize);
+ m = kmalloc(sizeof(struct v9fs_mux_data), GFP_KERNEL);
+ if (!m)
+ return ERR_PTR(-ENOMEM);
+
+ spin_lock_init(&m->lock);
+ INIT_LIST_HEAD(&m->mux_list);
+ m->msize = msize;
+ m->extended = extended;
+ m->trans = trans;
+ idr_init(&m->tidpool.pool);
+ init_MUTEX(&m->tidpool.lock);
+ m->err = 0;
+ init_waitqueue_head(&m->equeue);
+ INIT_LIST_HEAD(&m->req_list);
+ INIT_LIST_HEAD(&m->unsent_req_list);
+ m->rcall = NULL;
+ m->rpos = 0;
+ m->rbuf = NULL;
+ m->wpos = m->wsize = 0;
+ m->wbuf = NULL;
+ INIT_WORK(&m->rq, v9fs_read_work, m);
+ INIT_WORK(&m->wq, v9fs_write_work, m);
+ m->wsched = 0;
+ memset(&m->poll_waddr, 0, sizeof(m->poll_waddr));
+ m->poll_task = NULL;
+ n = v9fs_mux_poll_start(m);
+ if (n)
+ return ERR_PTR(n);
+
+ n = trans->poll(trans, &m->pt);
+ if (n & POLLIN) {
+ dprintk(DEBUG_MUX, "mux %p can read\n", m);
+ set_bit(Rpending, &m->wsched);
+ }
+
+ if (n & POLLOUT) {
+ dprintk(DEBUG_MUX, "mux %p can write\n", m);
+ set_bit(Wpending, &m->wsched);
+ }
+
+ for(i = 0; i < ARRAY_SIZE(m->poll_waddr); i++) {
+ if (IS_ERR(m->poll_waddr[i])) {
+ v9fs_mux_poll_stop(m);
+ mtmp = (void *)m->poll_waddr; /* the error code */
+ kfree(m);
+ m = mtmp;
+ break;
}
- rd += ret;
- ptr += ret;
}
- return (rd);
+
+ return m;
}
/**
- * read_message - read a full 9P2000 fcall packet
- * @v9ses: session info structure
- * @rcall: fcall structure to read into
- * @rcalllen: size of fcall buffer
- *
+ * v9fs_mux_destroy - cancels all pending requests and frees mux resources
*/
+void v9fs_mux_destroy(struct v9fs_mux_data *m)
+{
+ dprintk(DEBUG_MUX, "mux %p prev %p next %p\n", m,
+ m->mux_list.prev, m->mux_list.next);
+ v9fs_mux_cancel(m, -ECONNRESET);
+
+ if (!list_empty(&m->req_list)) {
+ /* wait until all processes waiting on this session exit */
+ dprintk(DEBUG_MUX, "mux %p waiting for empty request queue\n",
+ m);
+ wait_event_timeout(m->equeue, (list_empty(&m->req_list)), 5000);
+ dprintk(DEBUG_MUX, "mux %p request queue empty: %d\n", m,
+ list_empty(&m->req_list));
+ }
+
+ v9fs_mux_poll_stop(m);
+ m->trans = NULL;
+
+ kfree(m);
+}
-static int
-read_message(struct v9fs_session_info *v9ses,
- struct v9fs_fcall *rcall, int rcalllen)
+/**
+ * v9fs_pollwait - called by files poll operation to add v9fs-poll task
+ * to files wait queue
+ */
+static void
+v9fs_pollwait(struct file *filp, wait_queue_head_t * wait_address,
+ poll_table * p)
{
- unsigned char buf[4];
- void *data;
- int size = 0;
- int res = 0;
-
- res = xread(v9ses, buf, sizeof(buf));
- if (res < 0) {
- dprintk(DEBUG_ERROR,
- "Reading of count field failed returned: %d\n", res);
- return res;
+ int i;
+ struct v9fs_mux_data *m;
+
+ m = container_of(p, struct v9fs_mux_data, pt);
+ for(i = 0; i < ARRAY_SIZE(m->poll_waddr); i++)
+ if (m->poll_waddr[i] == NULL)
+ break;
+
+ if (i >= ARRAY_SIZE(m->poll_waddr)) {
+ dprintk(DEBUG_ERROR, "not enough wait_address slots\n");
+ return;
}
- if (res < 4) {
- dprintk(DEBUG_ERROR,
- "Reading of count field failed returned: %d\n", res);
- return -EIO;
+ m->poll_waddr[i] = wait_address;
+
+ if (!wait_address) {
+ dprintk(DEBUG_ERROR, "no wait_address\n");
+ m->poll_waddr[i] = ERR_PTR(-EIO);
+ return;
}
- size = buf[0] | (buf[1] << 8) | (buf[2] << 16) | (buf[3] << 24);
- dprintk(DEBUG_MUX, "got a packet count: %d\n", size);
+ init_waitqueue_entry(&m->poll_wait[i], m->poll_task->task);
+ add_wait_queue(wait_address, &m->poll_wait[i]);
+}
+
+/**
+ * v9fs_poll_mux - polls a mux and schedules read or write works if necessary
+ */
+static inline void v9fs_poll_mux(struct v9fs_mux_data *m)
+{
+ int n;
- /* adjust for the four bytes of size */
- size -= 4;
+ if (m->err < 0)
+ return;
- if (size > v9ses->maxdata) {
- dprintk(DEBUG_ERROR, "packet too big: %d\n", size);
- return -E2BIG;
+ n = m->trans->poll(m->trans, NULL);
+ if (n < 0 || n & (POLLERR | POLLHUP | POLLNVAL)) {
+ dprintk(DEBUG_MUX, "error mux %p err %d\n", m, n);
+ if (n >= 0)
+ n = -ECONNRESET;
+ v9fs_mux_cancel(m, n);
}
- data = kmalloc(size, GFP_KERNEL);
- if (!data) {
- eprintk(KERN_WARNING, "out of memory\n");
- return -ENOMEM;
+ if (n & POLLIN) {
+ set_bit(Rpending, &m->wsched);
+ dprintk(DEBUG_MUX, "mux %p can read\n", m);
+ if (!test_and_set_bit(Rworksched, &m->wsched)) {
+ dprintk(DEBUG_MUX, "schedule read work mux %p\n", m);
+ queue_work(v9fs_mux_wq, &m->rq);
+ }
}
- res = xread(v9ses, data, size);
- if (res < size) {
- dprintk(DEBUG_ERROR, "Reading of fcall failed returned: %d\n",
- res);
- kfree(data);
- return res;
+ if (n & POLLOUT) {
+ set_bit(Wpending, &m->wsched);
+ dprintk(DEBUG_MUX, "mux %p can write\n", m);
+ if ((m->wsize || !list_empty(&m->unsent_req_list))
+ && !test_and_set_bit(Wworksched, &m->wsched)) {
+ dprintk(DEBUG_MUX, "schedule write work mux %p\n", m);
+ queue_work(v9fs_mux_wq, &m->wq);
+ }
}
+}
+
+/**
+ * v9fs_poll_proc - polls all v9fs transports for new events and queues
+ * the appropriate work to the work queue
+ */
+static int v9fs_poll_proc(void *a)
+{
+ struct v9fs_mux_data *m, *mtmp;
+ struct v9fs_mux_poll_task *vpt;
- /* we now have an in-memory string that is the reply.
- * deserialize it. There is very little to go wrong at this point
- * save for v9fs_alloc errors.
- */
- res = v9fs_deserialize_fcall(v9ses, size, data, v9ses->maxdata,
- rcall, rcalllen);
+ vpt = a;
+ dprintk(DEBUG_MUX, "start %p %p\n", current, vpt);
+ allow_signal(SIGKILL);
+ while (!kthread_should_stop()) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (signal_pending(current))
+ break;
- kfree(data);
+ list_for_each_entry_safe(m, mtmp, &vpt->mux_list, mux_list) {
+ v9fs_poll_mux(m);
+ }
- if (res < 0)
- return res;
+ dprintk(DEBUG_MUX, "sleeping...\n");
+ schedule_timeout(SCHED_TIMEOUT * HZ);
+ }
+ __set_current_state(TASK_RUNNING);
+ dprintk(DEBUG_MUX, "finish\n");
return 0;
}
/**
- * v9fs_recv - receive an RPC response for a particular tag
- * @v9ses: session info structure
- * @req: RPC request structure
- *
+ * v9fs_write_work - called when a transport can send some data
*/
-
-static int v9fs_recv(struct v9fs_session_info *v9ses, struct v9fs_rpcreq *req)
+static void v9fs_write_work(void *a)
{
- int ret = 0;
+ int n, err;
+ struct v9fs_mux_data *m;
+ struct v9fs_req *req;
- dprintk(DEBUG_MUX, "waiting for response: %d\n", req->tcall->tag);
- ret = wait_event_interruptible(v9ses->read_wait,
- ((v9ses->transport->status != Connected) ||
- (req->rcall != 0) || (req->err < 0) ||
- dprintcond(v9ses, req)));
+ m = a;
- dprintk(DEBUG_MUX, "got it: rcall %p\n", req->rcall);
+ if (m->err < 0) {
+ clear_bit(Wworksched, &m->wsched);
+ return;
+ }
- spin_lock(&v9ses->muxlock);
- list_del(&req->next);
- spin_unlock(&v9ses->muxlock);
+ if (!m->wsize) {
+ if (list_empty(&m->unsent_req_list)) {
+ clear_bit(Wworksched, &m->wsched);
+ return;
+ }
- if (req->err < 0)
- return req->err;
+ spin_lock(&m->lock);
+ req =
+ list_entry(m->unsent_req_list.next, struct v9fs_req,
+ req_list);
+ list_move_tail(&req->req_list, &m->req_list);
+ m->wbuf = req->tcall->sdata;
+ m->wsize = req->tcall->size;
+ m->wpos = 0;
+ dump_data(m->wbuf, m->wsize);
+ spin_unlock(&m->lock);
+ }
- if (v9ses->transport->status == Disconnected)
- return -ECONNRESET;
+ dprintk(DEBUG_MUX, "mux %p pos %d size %d\n", m, m->wpos, m->wsize);
+ clear_bit(Wpending, &m->wsched);
+ err = m->trans->write(m->trans, m->wbuf + m->wpos, m->wsize - m->wpos);
+ dprintk(DEBUG_MUX, "mux %p sent %d bytes\n", m, err);
+ if (err == -EAGAIN) {
+ clear_bit(Wworksched, &m->wsched);
+ return;
+ }
- return ret;
-}
+ if (err <= 0)
+ goto error;
-/**
- * v9fs_send - send a 9P request
- * @v9ses: session info structure
- * @req: RPC request to send
- *
- */
+ m->wpos += err;
+ if (m->wpos == m->wsize)
+ m->wpos = m->wsize = 0;
+
+ if (m->wsize == 0 && !list_empty(&m->unsent_req_list)) {
+ if (test_and_clear_bit(Wpending, &m->wsched))
+ n = POLLOUT;
+ else
+ n = m->trans->poll(m->trans, NULL);
+
+ if (n & POLLOUT) {
+ dprintk(DEBUG_MUX, "schedule write work mux %p\n", m);
+ queue_work(v9fs_mux_wq, &m->wq);
+ } else
+ clear_bit(Wworksched, &m->wsched);
+ } else
+ clear_bit(Wworksched, &m->wsched);
+
+ return;
-static int v9fs_send(struct v9fs_session_info *v9ses, struct v9fs_rpcreq *req)
+ error:
+ v9fs_mux_cancel(m, err);
+ clear_bit(Wworksched, &m->wsched);
+}
+
+static void process_request(struct v9fs_mux_data *m, struct v9fs_req *req)
{
- int ret = -1;
- void *data = NULL;
- struct v9fs_fcall *tcall = req->tcall;
+ int ecode, tag;
+ struct v9fs_str *ename;
- data = kmalloc(v9ses->maxdata + V9FS_IOHDRSZ, GFP_KERNEL);
- if (!data)
- return -ENOMEM;
+ tag = req->tag;
+ if (req->rcall->id == RERROR && !req->err) {
+ ecode = req->rcall->params.rerror.errno;
+ ename = &req->rcall->params.rerror.error;
- tcall->size = 0; /* enforce size recalculation */
- ret =
- v9fs_serialize_fcall(v9ses, tcall, data,
- v9ses->maxdata + V9FS_IOHDRSZ);
- if (ret < 0)
- goto free_data;
+ dprintk(DEBUG_MUX, "Rerror %.*s\n", ename->len, ename->str);
- spin_lock(&v9ses->muxlock);
- list_add(&req->next, &v9ses->mux_fcalls);
- spin_unlock(&v9ses->muxlock);
+ if (*m->extended)
+ req->err = -ecode;
- dprintk(DEBUG_MUX, "sending message: tag %d size %d\n", tcall->tag,
- tcall->size);
- ret = v9ses->transport->write(v9ses->transport, data, tcall->size);
+ if (!req->err) {
+ req->err = v9fs_errstr2errno(ename->str, ename->len);
- if (ret != tcall->size) {
- spin_lock(&v9ses->muxlock);
- list_del(&req->next);
- kfree(req->rcall);
+ if (!req->err) { /* string match failed */
+ PRINT_FCALL_ERROR("unknown error", req->rcall);
+ }
+
+ if (!req->err)
+ req->err = -ESERVERFAULT;
+ }
+ } else if (req->tcall && req->rcall->id != req->tcall->id + 1) {
+ dprintk(DEBUG_ERROR, "fcall mismatch: expected %d, got %d\n",
+ req->tcall->id + 1, req->rcall->id);
+ if (!req->err)
+ req->err = -EIO;
+ }
- spin_unlock(&v9ses->muxlock);
- if (ret >= 0)
- ret = -EREMOTEIO;
+ if (req->cb && req->err != ERREQFLUSH) {
+ dprintk(DEBUG_MUX, "calling callback tcall %p rcall %p\n",
+ req->tcall, req->rcall);
+
+ (*req->cb) (req->cba, req->tcall, req->rcall, req->err);
+ req->cb = NULL;
} else
- ret = 0;
+ kfree(req->rcall);
- free_data:
- kfree(data);
- return ret;
+ v9fs_mux_put_tag(m, tag);
+
+ wake_up(&m->equeue);
+ kfree(req);
}
/**
- * v9fs_mux_rpc - send a request, receive a response
- * @v9ses: session info structure
- * @tcall: fcall to send
- * @rcall: buffer to place response into
- *
+ * v9fs_read_work - called when there is some data to be read from a transport
*/
-
-long
-v9fs_mux_rpc(struct v9fs_session_info *v9ses, struct v9fs_fcall *tcall,
- struct v9fs_fcall **rcall)
+static void v9fs_read_work(void *a)
{
- int tid = -1;
- struct v9fs_fcall *fcall = NULL;
- struct v9fs_rpcreq req;
- int ret = -1;
-
- if (!v9ses)
- return -EINVAL;
-
- if (!v9ses->transport || v9ses->transport->status != Connected)
- return -EIO;
+ int n, err;
+ struct v9fs_mux_data *m;
+ struct v9fs_req *req, *rptr, *rreq;
+ struct v9fs_fcall *rcall;
+ char *rbuf;
+
+ m = a;
+
+ if (m->err < 0)
+ return;
+
+ rcall = NULL;
+ dprintk(DEBUG_MUX, "start mux %p pos %d\n", m, m->rpos);
+
+ if (!m->rcall) {
+ m->rcall =
+ kmalloc(sizeof(struct v9fs_fcall) + m->msize, GFP_KERNEL);
+ if (!m->rcall) {
+ err = -ENOMEM;
+ goto error;
+ }
- if (rcall)
- *rcall = NULL;
+ m->rbuf = (char *)m->rcall + sizeof(struct v9fs_fcall);
+ m->rpos = 0;
+ }
- if (tcall->id != TVERSION) {
- tid = v9fs_get_idpool(&v9ses->tidpool);
- if (tid < 0)
- return -ENOMEM;
+ clear_bit(Rpending, &m->wsched);
+ err = m->trans->read(m->trans, m->rbuf + m->rpos, m->msize - m->rpos);
+ dprintk(DEBUG_MUX, "mux %p got %d bytes\n", m, err);
+ if (err == -EAGAIN) {
+ clear_bit(Rworksched, &m->wsched);
+ return;
}
- tcall->tag = tid;
+ if (err <= 0)
+ goto error;
- req.tcall = tcall;
- req.err = 0;
- req.rcall = NULL;
+ m->rpos += err;
+ while (m->rpos > 4) {
+ n = le32_to_cpu(*(__le32 *) m->rbuf);
+ if (n >= m->msize) {
+ dprintk(DEBUG_ERROR,
+ "requested packet size too big: %d\n", n);
+ err = -EIO;
+ goto error;
+ }
- ret = v9fs_send(v9ses, &req);
+ if (m->rpos < n)
+ break;
- if (ret < 0) {
- if (tcall->id != TVERSION)
- v9fs_put_idpool(tid, &v9ses->tidpool);
- dprintk(DEBUG_MUX, "error %d\n", ret);
- return ret;
- }
+ dump_data(m->rbuf, n);
+ err =
+ v9fs_deserialize_fcall(m->rbuf, n, m->rcall, *m->extended);
+ if (err < 0) {
+ goto error;
+ }
+
+ rcall = m->rcall;
+ rbuf = m->rbuf;
+ if (m->rpos > n) {
+ m->rcall = kmalloc(sizeof(struct v9fs_fcall) + m->msize,
+ GFP_KERNEL);
+ if (!m->rcall) {
+ err = -ENOMEM;
+ goto error;
+ }
- ret = v9fs_recv(v9ses, &req);
-
- fcall = req.rcall;
-
- dprintk(DEBUG_MUX, "received: tag=%x, ret=%d\n", tcall->tag, ret);
- if (ret == -ERESTARTSYS) {
- if (v9ses->transport->status != Disconnected
- && tcall->id != TFLUSH) {
- unsigned long flags;
-
- dprintk(DEBUG_MUX, "flushing the tag: %d\n",
- tcall->tag);
- clear_thread_flag(TIF_SIGPENDING);
- v9fs_t_flush(v9ses, tcall->tag);
- spin_lock_irqsave(&current->sighand->siglock, flags);
- recalc_sigpending();
- spin_unlock_irqrestore(&current->sighand->siglock,
- flags);
- dprintk(DEBUG_MUX, "flushing done\n");
+ m->rbuf = (char *)m->rcall + sizeof(struct v9fs_fcall);
+ memmove(m->rbuf, rbuf + n, m->rpos - n);
+ m->rpos -= n;
+ } else {
+ m->rcall = NULL;
+ m->rbuf = NULL;
+ m->rpos = 0;
}
- goto release_req;
- } else if (ret < 0)
- goto release_req;
-
- if (!fcall)
- ret = -EIO;
- else {
- if (fcall->id == RERROR) {
- ret = v9fs_errstr2errno(fcall->params.rerror.error);
- if (ret == 0) { /* string match failed */
- if (fcall->params.rerror.errno)
- ret = -(fcall->params.rerror.errno);
- else
- ret = -ESERVERFAULT;
+ dprintk(DEBUG_MUX, "mux %p fcall id %d tag %d\n", m, rcall->id,
+ rcall->tag);
+
+ req = NULL;
+ spin_lock(&m->lock);
+ list_for_each_entry_safe(rreq, rptr, &m->req_list, req_list) {
+ if (rreq->tag == rcall->tag) {
+ req = rreq;
+ req->rcall = rcall;
+ list_del(&req->req_list);
+ spin_unlock(&m->lock);
+ process_request(m, req);
+ break;
}
- } else if (fcall->id != tcall->id + 1) {
- dprintk(DEBUG_ERROR,
- "fcall mismatch: expected %d, got %d\n",
- tcall->id + 1, fcall->id);
- ret = -EIO;
+
+ }
+
+ if (!req) {
+ spin_unlock(&m->lock);
+ if (err >= 0 && rcall->id != RFLUSH)
+ dprintk(DEBUG_ERROR,
+ "unexpected response mux %p id %d tag %d\n",
+ m, rcall->id, rcall->tag);
+ kfree(rcall);
}
}
- release_req:
- if (tcall->id != TVERSION)
- v9fs_put_idpool(tid, &v9ses->tidpool);
- if (rcall)
- *rcall = fcall;
- else
- kfree(fcall);
+ if (!list_empty(&m->req_list)) {
+ if (test_and_clear_bit(Rpending, &m->wsched))
+ n = POLLIN;
+ else
+ n = m->trans->poll(m->trans, NULL);
+
+ if (n & POLLIN) {
+ dprintk(DEBUG_MUX, "schedule read work mux %p\n", m);
+ queue_work(v9fs_mux_wq, &m->rq);
+ } else
+ clear_bit(Rworksched, &m->wsched);
+ } else
+ clear_bit(Rworksched, &m->wsched);
+
+ return;
- return ret;
+ error:
+ v9fs_mux_cancel(m, err);
+ clear_bit(Rworksched, &m->wsched);
}
/**
- * v9fs_mux_cancel_requests - cancels all pending requests
+ * v9fs_send_request - send 9P request
+ * The function can sleep until the request is scheduled for sending.
+ * The function can be interrupted. Return from the function is not
+ * a guarantee that the request is sent succesfully. Can return errors
+ * that can be retrieved by PTR_ERR macros.
*
- * @v9ses: session info structure
- * @err: error code to return to the requests
+ * @m: mux data
+ * @tc: request to be sent
+ * @cb: callback function to call when response is received
+ * @cba: parameter to pass to the callback function
*/
-void v9fs_mux_cancel_requests(struct v9fs_session_info *v9ses, int err)
+static struct v9fs_req *v9fs_send_request(struct v9fs_mux_data *m,
+ struct v9fs_fcall *tc,
+ v9fs_mux_req_callback cb, void *cba)
{
- struct v9fs_rpcreq *rptr;
- struct v9fs_rpcreq *rreq;
+ int n;
+ struct v9fs_req *req;
- dprintk(DEBUG_MUX, " %d\n", err);
- spin_lock(&v9ses->muxlock);
- list_for_each_entry_safe(rreq, rptr, &v9ses->mux_fcalls, next) {
- rreq->err = err;
- }
- spin_unlock(&v9ses->muxlock);
- wake_up_all(&v9ses->read_wait);
-}
+ dprintk(DEBUG_MUX, "mux %p task %p tcall %p id %d\n", m, current,
+ tc, tc->id);
+ if (m->err < 0)
+ return ERR_PTR(m->err);
-/**
- * v9fs_recvproc - kproc to handle demultiplexing responses
- * @data: session info structure
- *
- */
+ req = kmalloc(sizeof(struct v9fs_req), GFP_KERNEL);
+ if (!req)
+ return ERR_PTR(-ENOMEM);
-static int v9fs_recvproc(void *data)
-{
- struct v9fs_session_info *v9ses = (struct v9fs_session_info *)data;
- struct v9fs_fcall *rcall = NULL;
- struct v9fs_rpcreq *rptr;
- struct v9fs_rpcreq *req;
- struct v9fs_rpcreq *rreq;
- int err = 0;
+ if (tc->id == TVERSION)
+ n = V9FS_NOTAG;
+ else
+ n = v9fs_mux_get_tag(m);
- allow_signal(SIGKILL);
- set_current_state(TASK_INTERRUPTIBLE);
- complete(&v9ses->proccmpl);
- while (!kthread_should_stop() && err >= 0) {
- req = rptr = rreq = NULL;
-
- rcall = kmalloc(v9ses->maxdata + V9FS_IOHDRSZ, GFP_KERNEL);
- if (!rcall) {
- eprintk(KERN_ERR, "no memory for buffers\n");
- break;
- }
+ if (n < 0)
+ return ERR_PTR(-ENOMEM);
- err = read_message(v9ses, rcall, v9ses->maxdata + V9FS_IOHDRSZ);
- spin_lock(&v9ses->muxlock);
- if (err < 0) {
- list_for_each_entry_safe(rreq, rptr, &v9ses->mux_fcalls, next) {
- rreq->err = err;
- }
- if(err != -ERESTARTSYS)
- eprintk(KERN_ERR,
- "Transport error while reading message %d\n", err);
- } else {
- list_for_each_entry_safe(rreq, rptr, &v9ses->mux_fcalls, next) {
- if (rreq->tcall->tag == rcall->tag) {
- req = rreq;
- req->rcall = rcall;
- break;
- }
- }
- }
+ v9fs_set_tag(tc, n);
- if (req && (req->tcall->id == TFLUSH)) {
- struct v9fs_rpcreq *treq = NULL;
- list_for_each_entry_safe(treq, rptr, &v9ses->mux_fcalls, next) {
- if (treq->tcall->tag ==
- req->tcall->params.tflush.oldtag) {
- list_del(&rptr->next);
- kfree(treq->rcall);
- break;
- }
+ req->tag = n;
+ req->tcall = tc;
+ req->rcall = NULL;
+ req->err = 0;
+ req->cb = cb;
+ req->cba = cba;
+
+ spin_lock(&m->lock);
+ list_add_tail(&req->req_list, &m->unsent_req_list);
+ spin_unlock(&m->lock);
+
+ if (test_and_clear_bit(Wpending, &m->wsched))
+ n = POLLOUT;
+ else
+ n = m->trans->poll(m->trans, NULL);
+
+ if (n & POLLOUT && !test_and_set_bit(Wworksched, &m->wsched))
+ queue_work(v9fs_mux_wq, &m->wq);
+
+ return req;
+}
+
+static inline void
+v9fs_mux_flush_cb(void *a, struct v9fs_fcall *tc, struct v9fs_fcall *rc,
+ int err)
+{
+ v9fs_mux_req_callback cb;
+ int tag;
+ struct v9fs_mux_data *m;
+ struct v9fs_req *req, *rptr;
+
+ m = a;
+ dprintk(DEBUG_MUX, "mux %p tc %p rc %p err %d oldtag %d\n", m, tc,
+ rc, err, tc->params.tflush.oldtag);
+
+ spin_lock(&m->lock);
+ cb = NULL;
+ tag = tc->params.tflush.oldtag;
+ list_for_each_entry_safe(req, rptr, &m->req_list, req_list) {
+ if (req->tag == tag) {
+ list_del(&req->req_list);
+ if (req->cb) {
+ cb = req->cb;
+ req->cb = NULL;
+ spin_unlock(&m->lock);
+ (*cb) (req->cba, req->tcall, req->rcall,
+ req->err);
}
+ kfree(req);
+ wake_up(&m->equeue);
+ break;
}
+ }
- spin_unlock(&v9ses->muxlock);
+ if (!cb)
+ spin_unlock(&m->lock);
- if (!req) {
- if (err >= 0)
- dprintk(DEBUG_ERROR,
- "unexpected response: id %d tag %d\n",
- rcall->id, rcall->tag);
+ v9fs_mux_put_tag(m, tag);
+ kfree(tc);
+ kfree(rc);
+}
- kfree(rcall);
- }
+static void
+v9fs_mux_flush_request(struct v9fs_mux_data *m, struct v9fs_req *req)
+{
+ struct v9fs_fcall *fc;
- wake_up_all(&v9ses->read_wait);
- set_current_state(TASK_INTERRUPTIBLE);
+ dprintk(DEBUG_MUX, "mux %p req %p tag %d\n", m, req, req->tag);
+
+ fc = v9fs_create_tflush(req->tag);
+ v9fs_send_request(m, fc, v9fs_mux_flush_cb, m);
+}
+
+static void
+v9fs_mux_rpc_cb(void *a, struct v9fs_fcall *tc, struct v9fs_fcall *rc, int err)
+{
+ struct v9fs_mux_rpc *r;
+
+ if (err == ERREQFLUSH) {
+ dprintk(DEBUG_MUX, "err req flush\n");
+ return;
}
- v9ses->transport->close(v9ses->transport);
+ r = a;
+ dprintk(DEBUG_MUX, "mux %p req %p tc %p rc %p err %d\n", r->m, r->req,
+ tc, rc, err);
+ r->rcall = rc;
+ r->err = err;
+ wake_up(&r->wqueue);
+}
- /* Inform all pending processes about the failure */
- wake_up_all(&v9ses->read_wait);
+/**
+ * v9fs_mux_rpc - sends 9P request and waits until a response is available.
+ * The function can be interrupted.
+ * @m: mux data
+ * @tc: request to be sent
+ * @rc: pointer where a pointer to the response is stored
+ */
+int
+v9fs_mux_rpc(struct v9fs_mux_data *m, struct v9fs_fcall *tc,
+ struct v9fs_fcall **rc)
+{
+ int err;
+ unsigned long flags;
+ struct v9fs_req *req;
+ struct v9fs_mux_rpc r;
+
+ r.err = 0;
+ r.rcall = NULL;
+ r.m = m;
+ init_waitqueue_head(&r.wqueue);
+
+ if (rc)
+ *rc = NULL;
+
+ req = v9fs_send_request(m, tc, v9fs_mux_rpc_cb, &r);
+ if (IS_ERR(req)) {
+ err = PTR_ERR(req);
+ dprintk(DEBUG_MUX, "error %d\n", err);
+ return PTR_ERR(req);
+ }
- if (signal_pending(current))
- complete(&v9ses->proccmpl);
+ r.req = req;
+ dprintk(DEBUG_MUX, "mux %p tc %p tag %d rpc %p req %p\n", m, tc,
+ req->tag, &r, req);
+ err = wait_event_interruptible(r.wqueue, r.rcall != NULL || r.err < 0);
+ if (r.err < 0)
+ err = r.err;
+
+ if (err == -ERESTARTSYS && m->trans->status == Connected && m->err == 0) {
+ spin_lock(&m->lock);
+ req->tcall = NULL;
+ req->err = ERREQFLUSH;
+ spin_unlock(&m->lock);
+
+ clear_thread_flag(TIF_SIGPENDING);
+ v9fs_mux_flush_request(m, req);
+ spin_lock_irqsave(&current->sighand->siglock, flags);
+ recalc_sigpending();
+ spin_unlock_irqrestore(&current->sighand->siglock, flags);
+ }
- dprintk(DEBUG_MUX, "recvproc: end\n");
- v9ses->recvproc = NULL;
+ if (!err) {
+ if (r.rcall)
+ dprintk(DEBUG_MUX, "got response id %d tag %d\n",
+ r.rcall->id, r.rcall->tag);
+
+ if (rc)
+ *rc = r.rcall;
+ else
+ kfree(r.rcall);
+ } else {
+ kfree(r.rcall);
+ dprintk(DEBUG_MUX, "got error %d\n", err);
+ if (err > 0)
+ err = -EIO;
+ }
- return err >= 0;
+ return err;
}
/**
- * v9fs_mux_init - initialize multiplexer (spawn kproc)
- * @v9ses: session info structure
- * @dev_name: mount device information (to create unique kproc)
- *
+ * v9fs_mux_rpcnb - sends 9P request without waiting for response.
+ * @m: mux data
+ * @tc: request to be sent
+ * @cb: callback function to be called when response arrives
+ * @cba: value to pass to the callback function
*/
+int v9fs_mux_rpcnb(struct v9fs_mux_data *m, struct v9fs_fcall *tc,
+ v9fs_mux_req_callback cb, void *a)
+{
+ int err;
+ struct v9fs_req *req;
+
+ req = v9fs_send_request(m, tc, cb, a);
+ if (IS_ERR(req)) {
+ err = PTR_ERR(req);
+ dprintk(DEBUG_MUX, "error %d\n", err);
+ return PTR_ERR(req);
+ }
+
+ dprintk(DEBUG_MUX, "mux %p tc %p tag %d\n", m, tc, req->tag);
+ return 0;
+}
-int v9fs_mux_init(struct v9fs_session_info *v9ses, const char *dev_name)
+/**
+ * v9fs_mux_cancel - cancel all pending requests with error
+ * @m: mux data
+ * @err: error code
+ */
+void v9fs_mux_cancel(struct v9fs_mux_data *m, int err)
{
- char procname[60];
-
- strncpy(procname, dev_name, sizeof(procname));
- procname[sizeof(procname) - 1] = 0;
-
- init_waitqueue_head(&v9ses->read_wait);
- init_completion(&v9ses->fcread);
- init_completion(&v9ses->proccmpl);
- spin_lock_init(&v9ses->muxlock);
- INIT_LIST_HEAD(&v9ses->mux_fcalls);
- v9ses->recvproc = NULL;
- v9ses->curfcall = NULL;
-
- v9ses->recvproc = kthread_create(v9fs_recvproc, v9ses,
- "v9fs_recvproc %s", procname);
-
- if (IS_ERR(v9ses->recvproc)) {
- eprintk(KERN_ERR, "cannot create receiving thread\n");
- v9fs_session_close(v9ses);
- return -ECONNABORTED;
+ struct v9fs_req *req, *rtmp;
+ LIST_HEAD(cancel_list);
+
+ dprintk(DEBUG_MUX, "mux %p err %d\n", m, err);
+ m->err = err;
+ spin_lock(&m->lock);
+ list_for_each_entry_safe(req, rtmp, &m->req_list, req_list) {
+ list_move(&req->req_list, &cancel_list);
}
+ spin_unlock(&m->lock);
- wake_up_process(v9ses->recvproc);
- wait_for_completion(&v9ses->proccmpl);
+ list_for_each_entry_safe(req, rtmp, &cancel_list, req_list) {
+ list_del(&req->req_list);
+ if (!req->err)
+ req->err = err;
- return 0;
+ if (req->cb)
+ (*req->cb) (req->cba, req->tcall, req->rcall, req->err);
+ else
+ kfree(req->rcall);
+
+ kfree(req);
+ }
+
+ wake_up(&m->equeue);
+}
+
+static u16 v9fs_mux_get_tag(struct v9fs_mux_data *m)
+{
+ int tag;
+
+ tag = v9fs_get_idpool(&m->tidpool);
+ if (tag < 0)
+ return V9FS_NOTAG;
+ else
+ return (u16) tag;
+}
+
+static void v9fs_mux_put_tag(struct v9fs_mux_data *m, u16 tag)
+{
+ if (tag != V9FS_NOTAG && v9fs_check_idpool(tag, &m->tidpool))
+ v9fs_put_idpool(tag, &m->tidpool);
}
diff --git a/fs/9p/mux.h b/fs/9p/mux.h
index 4994cb1..9473b84 100644
--- a/fs/9p/mux.h
+++ b/fs/9p/mux.h
@@ -3,6 +3,7 @@
*
* Multiplexer Definitions
*
+ * Copyright (C) 2005 by Latchesar Ionkov <lucho@ionkov.net>
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
@@ -23,19 +24,35 @@
*
*/
-/* structure to manage each RPC transaction */
+struct v9fs_mux_data;
-struct v9fs_rpcreq {
- struct v9fs_fcall *tcall;
- struct v9fs_fcall *rcall;
- int err; /* error code if response failed */
+/**
+ * v9fs_mux_req_callback - callback function that is called when the
+ * response of a request is received. The callback is called from
+ * a workqueue and shouldn't block.
+ *
+ * @a - the pointer that was specified when the request was send to be
+ * passed to the callback
+ * @tc - request call
+ * @rc - response call
+ * @err - error code (non-zero if error occured)
+ */
+typedef void (*v9fs_mux_req_callback)(void *a, struct v9fs_fcall *tc,
+ struct v9fs_fcall *rc, int err);
+
+int v9fs_mux_global_init(void);
+void v9fs_mux_global_exit(void);
- /* XXX - could we put scatter/gather buffers here? */
+struct v9fs_mux_data *v9fs_mux_init(struct v9fs_transport *trans, int msize,
+ unsigned char *extended);
+void v9fs_mux_destroy(struct v9fs_mux_data *);
- struct list_head next;
-};
+int v9fs_mux_send(struct v9fs_mux_data *m, struct v9fs_fcall *tc);
+struct v9fs_fcall *v9fs_mux_recv(struct v9fs_mux_data *m);
+int v9fs_mux_rpc(struct v9fs_mux_data *m, struct v9fs_fcall *tc, struct v9fs_fcall **rc);
+int v9fs_mux_rpcnb(struct v9fs_mux_data *m, struct v9fs_fcall *tc,
+ v9fs_mux_req_callback cb, void *a);
-int v9fs_mux_init(struct v9fs_session_info *v9ses, const char *dev_name);
-long v9fs_mux_rpc(struct v9fs_session_info *v9ses,
- struct v9fs_fcall *tcall, struct v9fs_fcall **rcall);
-void v9fs_mux_cancel_requests(struct v9fs_session_info *v9ses, int err);
+void v9fs_mux_flush(struct v9fs_mux_data *m, int sendflush);
+void v9fs_mux_cancel(struct v9fs_mux_data *m, int err);
+int v9fs_errstr2errno(char *errstr, int len);
diff --git a/fs/9p/trans_fd.c b/fs/9p/trans_fd.c
index 63b58ce..1a28ef9 100644
--- a/fs/9p/trans_fd.c
+++ b/fs/9p/trans_fd.c
@@ -3,6 +3,7 @@
*
* File Descriptor Transport Layer
*
+ * Copyright (C) 2005 by Latchesar Ionkov <lucho@ionkov.net>
* Copyright (C) 2005 by Eric Van Hensbergen <ericvh@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
@@ -106,9 +107,6 @@ v9fs_fd_init(struct v9fs_session_info *v9ses, const char *addr, char *data)
return -ENOPROTOOPT;
}
- sema_init(&trans->writelock, 1);
- sema_init(&trans->readlock, 1);
-
ts = kmalloc(sizeof(struct v9fs_trans_fd), GFP_KERNEL);
if (!ts)
@@ -148,12 +146,12 @@ static void v9fs_fd_close(struct v9fs_transport *trans)
if (!trans)
return;
- trans->status = Disconnected;
- ts = trans->priv;
+ ts = xchg(&trans->priv, NULL);
if (!ts)
return;
+ trans->status = Disconnected;
if (ts->in_file)
fput(ts->in_file);
@@ -163,10 +161,55 @@ static void v9fs_fd_close(struct v9fs_transport *trans)
kfree(ts);
}
+static unsigned int
+v9fs_fd_poll(struct v9fs_transport *trans, struct poll_table_struct *pt)
+{
+ int ret, n;
+ struct v9fs_trans_fd *ts;
+ mm_segment_t oldfs;
+
+ if (!trans)
+ return -EIO;
+
+ ts = trans->priv;
+ if (trans->status != Connected || !ts)
+ return -EIO;
+
+ oldfs = get_fs();
+ set_fs(get_ds());
+
+ if (!ts->in_file->f_op || !ts->in_file->f_op->poll) {
+ ret = -EIO;
+ goto end;
+ }
+
+ ret = ts->in_file->f_op->poll(ts->in_file, pt);
+
+ if (ts->out_file != ts->in_file) {
+ if (!ts->out_file->f_op || !ts->out_file->f_op->poll) {
+ ret = -EIO;
+ goto end;
+ }
+
+ n = ts->out_file->f_op->poll(ts->out_file, pt);
+
+ ret &= ~POLLOUT;
+ n &= ~POLLIN;
+
+ ret |= n;
+ }
+
+end:
+ set_fs(oldfs);
+ return ret;
+}
+
+
struct v9fs_transport v9fs_trans_fd = {
.init = v9fs_fd_init,
.write = v9fs_fd_send,
.read = v9fs_fd_recv,
.close = v9fs_fd_close,
+ .poll = v9fs_fd_poll,
};
diff --git a/fs/9p/trans_sock.c b/fs/9p/trans_sock.c
index 6a9a75d..44e8306 100644
--- a/fs/9p/trans_sock.c
+++ b/fs/9p/trans_sock.c
@@ -3,6 +3,7 @@
*
* Socket Transport Layer
*
+ * Copyright (C) 2004-2005 by Latchesar Ionkov <lucho@ionkov.net>
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
* Copyright (C) 1997-2002 by Ron Minnich <rminnich@sarnoff.com>
* Copyright (C) 1995, 1996 by Olaf Kirch <okir@monad.swb.de>
@@ -36,6 +37,7 @@
#include <asm/uaccess.h>
#include <linux/inet.h>
#include <linux/idr.h>
+#include <linux/file.h>
#include "debug.h"
#include "v9fs.h"
@@ -45,6 +47,7 @@
struct v9fs_trans_sock {
struct socket *s;
+ struct file *filp;
};
/**
@@ -57,41 +60,26 @@ struct v9fs_trans_sock {
static int v9fs_sock_recv(struct v9fs_transport *trans, void *v, int len)
{
- struct msghdr msg;
- struct kvec iov;
- int result;
- mm_segment_t oldfs;
- struct v9fs_trans_sock *ts = trans ? trans->priv : NULL;
+ int ret;
+ struct v9fs_trans_sock *ts;
- if (trans->status == Disconnected)
+ if (!trans || trans->status == Disconnected) {
+ dprintk(DEBUG_ERROR, "disconnected ...\n");
return -EREMOTEIO;
+ }
- result = -EINVAL;
-
- oldfs = get_fs();
- set_fs(get_ds());
-
- iov.iov_base = v;
- iov.iov_len = len;
- msg.msg_name = NULL;
- msg.msg_namelen = 0;
- msg.msg_iovlen = 1;
- msg.msg_control = NULL;
- msg.msg_controllen = 0;
- msg.msg_namelen = 0;
- msg.msg_flags = MSG_NOSIGNAL;
+ ts = trans->priv;
- result = kernel_recvmsg(ts->s, &msg, &iov, 1, len, 0);
+ if (!(ts->filp->f_flags & O_NONBLOCK))
+ dprintk(DEBUG_ERROR, "blocking read ...\n");
- dprintk(DEBUG_TRANS, "socket state %d\n", ts->s->state);
- set_fs(oldfs);
-
- if (result <= 0) {
- if (result != -ERESTARTSYS)
+ ret = kernel_read(ts->filp, ts->filp->f_pos, v, len);
+ if (ret <= 0) {
+ if (ret != -ERESTARTSYS && ret != -EAGAIN)
trans->status = Disconnected;
}
- return result;
+ return ret;
}
/**
@@ -104,40 +92,72 @@ static int v9fs_sock_recv(struct v9fs_transport *trans, void *v, int len)
static int v9fs_sock_send(struct v9fs_transport *trans, void *v, int len)
{
- struct kvec iov;
- struct msghdr msg;
- int result = -1;
+ int ret;
mm_segment_t oldfs;
- struct v9fs_trans_sock *ts = trans ? trans->priv : NULL;
+ struct v9fs_trans_sock *ts;
- dprintk(DEBUG_TRANS, "Sending packet size %d (%x)\n", len, len);
- dump_data(v, len);
+ if (!trans || trans->status == Disconnected) {
+ dprintk(DEBUG_ERROR, "disconnected ...\n");
+ return -EREMOTEIO;
+ }
+
+ ts = trans->priv;
+ if (!ts) {
+ dprintk(DEBUG_ERROR, "no transport ...\n");
+ return -EREMOTEIO;
+ }
- down(&trans->writelock);
+ if (!(ts->filp->f_flags & O_NONBLOCK))
+ dprintk(DEBUG_ERROR, "blocking write ...\n");
oldfs = get_fs();
set_fs(get_ds());
- iov.iov_base = v;
- iov.iov_len = len;
- msg.msg_name = NULL;
- msg.msg_namelen = 0;
- msg.msg_iovlen = 1;
- msg.msg_control = NULL;
- msg.msg_controllen = 0;
- msg.msg_namelen = 0;
- msg.msg_flags = MSG_NOSIGNAL;
- result = kernel_sendmsg(ts->s, &msg, &iov, 1, len);
+ ret = vfs_write(ts->filp, (void __user *)v, len, &ts->filp->f_pos);
set_fs(oldfs);
- if (result < 0) {
- if (result != -ERESTARTSYS)
+ if (ret < 0) {
+ if (ret != -ERESTARTSYS)
trans->status = Disconnected;
}
- up(&trans->writelock);
- return result;
+ return ret;
+}
+
+static unsigned int v9fs_sock_poll(struct v9fs_transport *trans,
+ struct poll_table_struct *pt) {
+
+ int ret;
+ struct v9fs_trans_sock *ts;
+ mm_segment_t oldfs;
+
+ if (!trans) {
+ dprintk(DEBUG_ERROR, "no transport\n");
+ return -EIO;
+ }
+
+ ts = trans->priv;
+ if (trans->status != Connected || !ts) {
+ dprintk(DEBUG_ERROR, "transport disconnected: %d\n", trans->status);
+ return -EIO;
+ }
+
+ oldfs = get_fs();
+ set_fs(get_ds());
+
+ if (!ts->filp->f_op || !ts->filp->f_op->poll) {
+ dprintk(DEBUG_ERROR, "no poll operation\n");
+ ret = -EIO;
+ goto end;
+ }
+
+ ret = ts->filp->f_op->poll(ts->filp, pt);
+
+end:
+ set_fs(oldfs);
+ return ret;
}
+
/**
* v9fs_tcp_init - initialize TCP socket
* @v9ses: session information
@@ -154,9 +174,9 @@ v9fs_tcp_init(struct v9fs_session_info *v9ses, const char *addr, char *data)
int rc = 0;
struct v9fs_trans_sock *ts = NULL;
struct v9fs_transport *trans = v9ses->transport;
+ int fd;
- sema_init(&trans->writelock, 1);
- sema_init(&trans->readlock, 1);
+ trans->status = Disconnected;
ts = kmalloc(sizeof(struct v9fs_trans_sock), GFP_KERNEL);
@@ -165,6 +185,7 @@ v9fs_tcp_init(struct v9fs_session_info *v9ses, const char *addr, char *data)
trans->priv = ts;
ts->s = NULL;
+ ts->filp = NULL;
if (!addr)
return -EINVAL;
@@ -185,7 +206,18 @@ v9fs_tcp_init(struct v9fs_session_info *v9ses, const char *addr, char *data)
return rc;
}
csocket->sk->sk_allocation = GFP_NOIO;
+
+ fd = sock_map_fd(csocket);
+ if (fd < 0) {
+ sock_release(csocket);
+ kfree(ts);
+ trans->priv = NULL;
+ return fd;
+ }
+
ts->s = csocket;
+ ts->filp = fget(fd);
+ ts->filp->f_flags |= O_NONBLOCK;
trans->status = Connected;
return 0;
@@ -203,7 +235,7 @@ static int
v9fs_unix_init(struct v9fs_session_info *v9ses, const char *dev_name,
char *data)
{
- int rc;
+ int rc, fd;
struct socket *csocket;
struct sockaddr_un sun_server;
struct v9fs_transport *trans;
@@ -213,6 +245,8 @@ v9fs_unix_init(struct v9fs_session_info *v9ses, const char *dev_name,
csocket = NULL;
trans = v9ses->transport;
+ trans->status = Disconnected;
+
if (strlen(dev_name) > UNIX_PATH_MAX) {
eprintk(KERN_ERR, "v9fs_trans_unix: address too long: %s\n",
dev_name);
@@ -225,9 +259,7 @@ v9fs_unix_init(struct v9fs_session_info *v9ses, const char *dev_name,
trans->priv = ts;
ts->s = NULL;
-
- sema_init(&trans->writelock, 1);
- sema_init(&trans->readlock, 1);
+ ts->filp = NULL;
sun_server.sun_family = PF_UNIX;
strcpy(sun_server.sun_path, dev_name);
@@ -241,7 +273,18 @@ v9fs_unix_init(struct v9fs_session_info *v9ses, const char *dev_name,
return rc;
}
csocket->sk->sk_allocation = GFP_NOIO;
+
+ fd = sock_map_fd(csocket);
+ if (fd < 0) {
+ sock_release(csocket);
+ kfree(ts);
+ trans->priv = NULL;
+ return fd;
+ }
+
ts->s = csocket;
+ ts->filp = fget(fd);
+ ts->filp->f_flags |= O_NONBLOCK;
trans->status = Connected;
return 0;
@@ -262,12 +305,11 @@ static void v9fs_sock_close(struct v9fs_transport *trans)
ts = trans->priv;
- if ((ts) && (ts->s)) {
- dprintk(DEBUG_TRANS, "closing the socket %p\n", ts->s);
- sock_release(ts->s);
+ if ((ts) && (ts->filp)) {
+ fput(ts->filp);
+ ts->filp = NULL;
ts->s = NULL;
trans->status = Disconnected;
- dprintk(DEBUG_TRANS, "socket closed\n");
}
kfree(ts);
@@ -280,6 +322,7 @@ struct v9fs_transport v9fs_trans_tcp = {
.write = v9fs_sock_send,
.read = v9fs_sock_recv,
.close = v9fs_sock_close,
+ .poll = v9fs_sock_poll,
};
struct v9fs_transport v9fs_trans_unix = {
@@ -287,4 +330,5 @@ struct v9fs_transport v9fs_trans_unix = {
.write = v9fs_sock_send,
.read = v9fs_sock_recv,
.close = v9fs_sock_close,
+ .poll = v9fs_sock_poll,
};
diff --git a/fs/9p/transport.h b/fs/9p/transport.h
index 9e9cd41..91fcdb9 100644
--- a/fs/9p/transport.h
+++ b/fs/9p/transport.h
@@ -3,6 +3,7 @@
*
* Transport Definition
*
+ * Copyright (C) 2005 by Latchesar Ionkov <lucho@ionkov.net>
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
@@ -31,14 +32,13 @@ enum v9fs_transport_status {
struct v9fs_transport {
enum v9fs_transport_status status;
- struct semaphore writelock;
- struct semaphore readlock;
void *priv;
int (*init) (struct v9fs_session_info *, const char *, char *);
int (*write) (struct v9fs_transport *, void *, int);
int (*read) (struct v9fs_transport *, void *, int);
void (*close) (struct v9fs_transport *);
+ unsigned int (*poll)(struct v9fs_transport *, struct poll_table_struct *);
};
extern struct v9fs_transport v9fs_trans_tcp;
diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index 418c374..5250c42 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -37,7 +37,6 @@
#include "v9fs_vfs.h"
#include "transport.h"
#include "mux.h"
-#include "conv.h"
/* TODO: sysfs or debugfs interface */
int v9fs_debug_level = 0; /* feature-rific global debug level */
@@ -213,7 +212,8 @@ retry:
return -1;
}
- error = idr_get_new(&p->pool, NULL, &i);
+ /* no need to store exactly p, we just need something non-null */
+ error = idr_get_new(&p->pool, p, &i);
up(&p->lock);
if (error == -EAGAIN)
@@ -243,6 +243,16 @@ void v9fs_put_idpool(int id, struct v9fs_idpool *p)
}
/**
+ * v9fs_check_idpool - check if the specified id is available
+ * @id - id to check
+ * @p - pool
+ */
+int v9fs_check_idpool(int id, struct v9fs_idpool *p)
+{
+ return idr_find(&p->pool, id) != NULL;
+}
+
+/**
* v9fs_session_init - initialize session
* @v9ses: session information structure
* @dev_name: device being mounted
@@ -259,6 +269,7 @@ v9fs_session_init(struct v9fs_session_info *v9ses,
int n = 0;
int newfid = -1;
int retval = -EINVAL;
+ struct v9fs_str *version;
v9ses->name = __getname();
if (!v9ses->name)
@@ -281,9 +292,6 @@ v9fs_session_init(struct v9fs_session_info *v9ses,
/* id pools that are session-dependent: FIDs and TIDs */
idr_init(&v9ses->fidpool.pool);
init_MUTEX(&v9ses->fidpool.lock);
- idr_init(&v9ses->tidpool.pool);
- init_MUTEX(&v9ses->tidpool.lock);
-
switch (v9ses->proto) {
case PROTO_TCP:
@@ -320,7 +328,12 @@ v9fs_session_init(struct v9fs_session_info *v9ses,
v9ses->shutdown = 0;
v9ses->session_hung = 0;
- if ((retval = v9fs_mux_init(v9ses, dev_name)) < 0) {
+ v9ses->mux = v9fs_mux_init(v9ses->transport, v9ses->maxdata + V9FS_IOHDRSZ,
+ &v9ses->extended);
+
+ if (IS_ERR(v9ses->mux)) {
+ retval = PTR_ERR(v9ses->mux);
+ v9ses->mux = NULL;
dprintk(DEBUG_ERROR, "problem initializing mux\n");
goto SessCleanUp;
}
@@ -339,13 +352,16 @@ v9fs_session_init(struct v9fs_session_info *v9ses,
goto FreeFcall;
}
- /* Really should check for 9P1 and report error */
- if (!strcmp(fcall->params.rversion.version, "9P2000.u")) {
+ version = &fcall->params.rversion.version;
+ if (version->len==8 && !memcmp(version->str, "9P2000.u", 8)) {
dprintk(DEBUG_9P, "9P2000 UNIX extensions enabled\n");
v9ses->extended = 1;
- } else {
+ } else if (version->len==6 && !memcmp(version->str, "9P2000", 6)) {
dprintk(DEBUG_9P, "9P2000 legacy mode enabled\n");
v9ses->extended = 0;
+ } else {
+ retval = -EREMOTEIO;
+ goto FreeFcall;
}
n = fcall->params.rversion.msize;
@@ -381,7 +397,7 @@ v9fs_session_init(struct v9fs_session_info *v9ses,
}
if (v9ses->afid != ~0) {
- if (v9fs_t_clunk(v9ses, v9ses->afid, NULL))
+ if (v9fs_t_clunk(v9ses, v9ses->afid))
dprintk(DEBUG_ERROR, "clunk failed\n");
}
@@ -403,13 +419,16 @@ v9fs_session_init(struct v9fs_session_info *v9ses,
void v9fs_session_close(struct v9fs_session_info *v9ses)
{
- if (v9ses->recvproc) {
- send_sig(SIGKILL, v9ses->recvproc, 1);
- wait_for_completion(&v9ses->proccmpl);
+ if (v9ses->mux) {
+ v9fs_mux_destroy(v9ses->mux);
+ v9ses->mux = NULL;
}
- if (v9ses->transport)
+ if (v9ses->transport) {
v9ses->transport->close(v9ses->transport);
+ kfree(v9ses->transport);
+ v9ses->transport = NULL;
+ }
__putname(v9ses->name);
__putname(v9ses->remotename);
@@ -420,8 +439,9 @@ void v9fs_session_close(struct v9fs_session_info *v9ses)
* and cancel all pending requests.
*/
void v9fs_session_cancel(struct v9fs_session_info *v9ses) {
+ dprintk(DEBUG_ERROR, "cancel session %p\n", v9ses);
v9ses->transport->status = Disconnected;
- v9fs_mux_cancel_requests(v9ses, -EIO);
+ v9fs_mux_cancel(v9ses->mux, -EIO);
}
extern int v9fs_error_init(void);
@@ -433,11 +453,17 @@ extern int v9fs_error_init(void);
static int __init init_v9fs(void)
{
+ int ret;
+
v9fs_error_init();
printk(KERN_INFO "Installing v9fs 9P2000 file system support\n");
- return register_filesystem(&v9fs_fs_type);
+ ret = v9fs_mux_global_init();
+ if (!ret)
+ ret = register_filesystem(&v9fs_fs_type);
+
+ return ret;
}
/**
@@ -447,6 +473,7 @@ static int __init init_v9fs(void)
static void __exit exit_v9fs(void)
{
+ v9fs_mux_global_exit();
unregister_filesystem(&v9fs_fs_type);
}
diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h
index 45dcef4..f337da7 100644
--- a/fs/9p/v9fs.h
+++ b/fs/9p/v9fs.h
@@ -57,24 +57,14 @@ struct v9fs_session_info {
/* book keeping */
struct v9fs_idpool fidpool; /* The FID pool for file descriptors */
- struct v9fs_idpool tidpool; /* The TID pool for transactions ids */
- /* transport information */
struct v9fs_transport *transport;
+ struct v9fs_mux_data *mux;
int inprogress; /* session in progress => true */
int shutdown; /* session shutting down. no more attaches. */
unsigned char session_hung;
-
- /* mux private data */
- struct v9fs_fcall *curfcall;
- wait_queue_head_t read_wait;
- struct completion fcread;
- struct completion proccmpl;
- struct task_struct *recvproc;
-
- spinlock_t muxlock;
- struct list_head mux_fcalls;
+ struct dentry *debugfs_dir;
};
/* possible values of ->proto */
@@ -84,11 +74,14 @@ enum {
PROTO_FD,
};
+extern struct dentry *v9fs_debugfs_root;
+
int v9fs_session_init(struct v9fs_session_info *, const char *, char *);
struct v9fs_session_info *v9fs_inode2v9ses(struct inode *);
void v9fs_session_close(struct v9fs_session_info *v9ses);
int v9fs_get_idpool(struct v9fs_idpool *p);
void v9fs_put_idpool(int id, struct v9fs_idpool *p);
+int v9fs_check_idpool(int id, struct v9fs_idpool *p);
void v9fs_session_cancel(struct v9fs_session_info *v9ses);
#define V9FS_MAGIC 0x01021997
diff --git a/fs/9p/v9fs_vfs.h b/fs/9p/v9fs_vfs.h
index 2f2cea7..c78502a 100644
--- a/fs/9p/v9fs_vfs.h
+++ b/fs/9p/v9fs_vfs.h
@@ -45,9 +45,8 @@ extern struct dentry_operations v9fs_dentry_operations;
struct inode *v9fs_get_inode(struct super_block *sb, int mode);
ino_t v9fs_qid2ino(struct v9fs_qid *qid);
-void v9fs_mistat2inode(struct v9fs_stat *, struct inode *,
- struct super_block *);
+void v9fs_stat2inode(struct v9fs_stat *, struct inode *, struct super_block *);
int v9fs_dir_release(struct inode *inode, struct file *filp);
int v9fs_file_open(struct inode *inode, struct file *file);
-void v9fs_inode2mistat(struct inode *inode, struct v9fs_stat *mistat);
+void v9fs_inode2stat(struct inode *inode, struct v9fs_stat *stat);
void v9fs_dentry_release(struct dentry *);
diff --git a/fs/9p/vfs_dentry.c b/fs/9p/vfs_dentry.c
index a6aa947..2dd806d 100644
--- a/fs/9p/vfs_dentry.c
+++ b/fs/9p/vfs_dentry.c
@@ -40,7 +40,6 @@
#include "v9fs.h"
#include "9p.h"
#include "v9fs_vfs.h"
-#include "conv.h"
#include "fid.h"
/**
@@ -95,24 +94,22 @@ static int v9fs_dentry_validate(struct dentry *dentry, struct nameidata *nd)
void v9fs_dentry_release(struct dentry *dentry)
{
+ int err;
+
dprintk(DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_iname, dentry);
if (dentry->d_fsdata != NULL) {
struct list_head *fid_list = dentry->d_fsdata;
struct v9fs_fid *temp = NULL;
struct v9fs_fid *current_fid = NULL;
- struct v9fs_fcall *fcall = NULL;
list_for_each_entry_safe(current_fid, temp, fid_list, list) {
- if (v9fs_t_clunk
- (current_fid->v9ses, current_fid->fid, &fcall))
- dprintk(DEBUG_ERROR, "clunk failed: %s\n",
- FCALL_ERROR(fcall));
+ err = v9fs_t_clunk(current_fid->v9ses, current_fid->fid);
- v9fs_put_idpool(current_fid->fid,
- &current_fid->v9ses->fidpool);
+ if (err < 0)
+ dprintk(DEBUG_ERROR, "clunk failed: %d name %s\n",
+ err, dentry->d_iname);
- kfree(fcall);
v9fs_fid_destroy(current_fid);
}
diff --git a/fs/9p/vfs_dir.c b/fs/9p/vfs_dir.c
index 57a43b8..ae6d032 100644
--- a/fs/9p/vfs_dir.c
+++ b/fs/9p/vfs_dir.c
@@ -37,8 +37,8 @@
#include "debug.h"
#include "v9fs.h"
#include "9p.h"
-#include "v9fs_vfs.h"
#include "conv.h"
+#include "v9fs_vfs.h"
#include "fid.h"
/**
@@ -74,20 +74,16 @@ static int v9fs_dir_readdir(struct file *filp, void *dirent, filldir_t filldir)
struct inode *inode = filp->f_dentry->d_inode;
struct v9fs_session_info *v9ses = v9fs_inode2v9ses(inode);
struct v9fs_fid *file = filp->private_data;
- unsigned int i, n;
+ unsigned int i, n, s;
int fid = -1;
int ret = 0;
- struct v9fs_stat *mi = NULL;
+ struct v9fs_stat stat;
int over = 0;
dprintk(DEBUG_VFS, "name %s\n", filp->f_dentry->d_name.name);
fid = file->fid;
- mi = kmalloc(v9ses->maxdata, GFP_KERNEL);
- if (!mi)
- return -ENOMEM;
-
if (file->rdir_fcall && (filp->f_pos != file->rdir_pos)) {
kfree(file->rdir_fcall);
file->rdir_fcall = NULL;
@@ -97,20 +93,20 @@ static int v9fs_dir_readdir(struct file *filp, void *dirent, filldir_t filldir)
n = file->rdir_fcall->params.rread.count;
i = file->rdir_fpos;
while (i < n) {
- int s = v9fs_deserialize_stat(v9ses,
- file->rdir_fcall->params.rread.data + i,
- n - i, mi, v9ses->maxdata);
+ s = v9fs_deserialize_stat(
+ file->rdir_fcall->params.rread.data + i,
+ n - i, &stat, v9ses->extended);
if (s == 0) {
dprintk(DEBUG_ERROR,
- "error while deserializing mistat\n");
+ "error while deserializing stat\n");
ret = -EIO;
goto FreeStructs;
}
- over = filldir(dirent, mi->name, strlen(mi->name),
- filp->f_pos, v9fs_qid2ino(&mi->qid),
- dt_type(mi));
+ over = filldir(dirent, stat.name.str, stat.name.len,
+ filp->f_pos, v9fs_qid2ino(&stat.qid),
+ dt_type(&stat));
if (over) {
file->rdir_fpos = i;
@@ -130,7 +126,7 @@ static int v9fs_dir_readdir(struct file *filp, void *dirent, filldir_t filldir)
while (!over) {
ret = v9fs_t_read(v9ses, fid, filp->f_pos,
- v9ses->maxdata-V9FS_IOHDRSZ, &fcall);
+ v9ses->maxdata-V9FS_IOHDRSZ, &fcall);
if (ret < 0) {
dprintk(DEBUG_ERROR, "error while reading: %d: %p\n",
ret, fcall);
@@ -141,19 +137,18 @@ static int v9fs_dir_readdir(struct file *filp, void *dirent, filldir_t filldir)
n = ret;
i = 0;
while (i < n) {
- int s = v9fs_deserialize_stat(v9ses,
- fcall->params.rread.data + i, n - i, mi,
- v9ses->maxdata);
+ s = v9fs_deserialize_stat(fcall->params.rread.data + i,
+ n - i, &stat, v9ses->extended);
if (s == 0) {
dprintk(DEBUG_ERROR,
- "error while deserializing mistat\n");
+ "error while deserializing stat\n");
return -EIO;
}
- over = filldir(dirent, mi->name, strlen(mi->name),
- filp->f_pos, v9fs_qid2ino(&mi->qid),
- dt_type(mi));
+ over = filldir(dirent, stat.name.str, stat.name.len,
+ filp->f_pos, v9fs_qid2ino(&stat.qid),
+ dt_type(&stat));
if (over) {
file->rdir_fcall = fcall;
@@ -172,7 +167,6 @@ static int v9fs_dir_readdir(struct file *filp, void *dirent, filldir_t filldir)
FreeStructs:
kfree(fcall);
- kfree(mi);
return ret;
}
@@ -193,18 +187,15 @@ int v9fs_dir_release(struct inode *inode, struct file *filp)
fid->fid);
fidnum = fid->fid;
- filemap_fdatawrite(inode->i_mapping);
- filemap_fdatawait(inode->i_mapping);
+ filemap_write_and_wait(inode->i_mapping);
if (fidnum >= 0) {
dprintk(DEBUG_VFS, "fidopen: %d v9f->fid: %d\n", fid->fidopen,
fid->fid);
- if (v9fs_t_clunk(v9ses, fidnum, NULL))
+ if (v9fs_t_clunk(v9ses, fidnum))
dprintk(DEBUG_ERROR, "clunk failed\n");
- v9fs_put_idpool(fid->fid, &v9ses->fidpool);
-
kfree(fid->rdir_fcall);
kfree(fid);
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 89c849d..6852f0e 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -32,6 +32,7 @@
#include <linux/string.h>
#include <linux/smp_lock.h>
#include <linux/inet.h>
+#include <linux/version.h>
#include <linux/list.h>
#include <asm/uaccess.h>
#include <linux/idr.h>
@@ -117,9 +118,7 @@ int v9fs_file_open(struct inode *inode, struct file *file)
result = v9fs_t_open(v9ses, newfid, open_mode, &fcall);
if (result < 0) {
- dprintk(DEBUG_ERROR,
- "open failed, open_mode 0x%x: %s\n", open_mode,
- FCALL_ERROR(fcall));
+ PRINT_FCALL_ERROR("open failed", fcall);
kfree(fcall);
return result;
}
@@ -165,8 +164,7 @@ static int v9fs_file_lock(struct file *filp, int cmd, struct file_lock *fl)
return -ENOLCK;
if ((IS_SETLK(cmd) || IS_SETLKW(cmd)) && fl->fl_type != F_UNLCK) {
- filemap_fdatawrite(inode->i_mapping);
- filemap_fdatawait(inode->i_mapping);
+ filemap_write_and_wait(inode->i_mapping);
invalidate_inode_pages(&inode->i_data);
}
@@ -257,7 +255,6 @@ v9fs_file_write(struct file *filp, const char __user * data,
int result = -EIO;
int rsize = 0;
int total = 0;
- char *buf;
dprintk(DEBUG_VFS, "data %p count %d offset %x\n", data, (int)count,
(int)*offset);
@@ -265,28 +262,14 @@ v9fs_file_write(struct file *filp, const char __user * data,
if (v9fid->iounit != 0 && rsize > v9fid->iounit)
rsize = v9fid->iounit;
- buf = kmalloc(v9ses->maxdata - V9FS_IOHDRSZ, GFP_KERNEL);
- if (!buf)
- return -ENOMEM;
-
do {
if (count < rsize)
rsize = count;
- result = copy_from_user(buf, data, rsize);
- if (result) {
- dprintk(DEBUG_ERROR, "Problem copying from user\n");
- kfree(buf);
- return -EFAULT;
- }
-
- dump_data(buf, rsize);
- result = v9fs_t_write(v9ses, fid, *offset, rsize, buf, &fcall);
+ result = v9fs_t_write(v9ses, fid, *offset, rsize, data, &fcall);
if (result < 0) {
- eprintk(KERN_ERR, "error while writing: %s(%d)\n",
- FCALL_ERROR(fcall), result);
+ PRINT_FCALL_ERROR("error while writing", fcall);
kfree(fcall);
- kfree(buf);
return result;
} else
*offset += result;
@@ -306,7 +289,6 @@ v9fs_file_write(struct file *filp, const char __user * data,
total += result;
} while (count);
- kfree(buf);
return total;
}
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 0ea965c..d933ef1 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -40,7 +40,6 @@
#include "v9fs.h"
#include "9p.h"
#include "v9fs_vfs.h"
-#include "conv.h"
#include "fid.h"
static struct inode_operations v9fs_dir_inode_operations;
@@ -127,100 +126,32 @@ static int p9mode2unixmode(struct v9fs_session_info *v9ses, int mode)
}
/**
- * v9fs_blank_mistat - helper function to setup a 9P stat structure
+ * v9fs_blank_wstat - helper function to setup a 9P stat structure
* @v9ses: 9P session info (for determining extended mode)
- * @mistat: structure to initialize
+ * @wstat: structure to initialize
*
*/
static void
-v9fs_blank_mistat(struct v9fs_session_info *v9ses, struct v9fs_stat *mistat)
+v9fs_blank_wstat(struct v9fs_wstat *wstat)
{
- mistat->type = ~0;
- mistat->dev = ~0;
- mistat->qid.type = ~0;
- mistat->qid.version = ~0;
- *((long long *)&mistat->qid.path) = ~0;
- mistat->mode = ~0;
- mistat->atime = ~0;
- mistat->mtime = ~0;
- mistat->length = ~0;
- mistat->name = mistat->data;
- mistat->uid = mistat->data;
- mistat->gid = mistat->data;
- mistat->muid = mistat->data;
- if (v9ses->extended) {
- mistat->n_uid = ~0;
- mistat->n_gid = ~0;
- mistat->n_muid = ~0;
- mistat->extension = mistat->data;
- }
- *mistat->data = 0;
-}
-
-/**
- * v9fs_mistat2unix - convert mistat to unix stat
- * @mistat: Plan 9 metadata (mistat) structure
- * @buf: unix metadata (stat) structure to populate
- * @sb: superblock
- *
- */
-
-static void
-v9fs_mistat2unix(struct v9fs_stat *mistat, struct stat *buf,
- struct super_block *sb)
-{
- struct v9fs_session_info *v9ses = sb ? sb->s_fs_info : NULL;
-
- buf->st_nlink = 1;
-
- buf->st_atime = mistat->atime;
- buf->st_mtime = mistat->mtime;
- buf->st_ctime = mistat->mtime;
-
- buf->st_uid = (unsigned short)-1;
- buf->st_gid = (unsigned short)-1;
-
- if (v9ses && v9ses->extended) {
- /* TODO: string to uid mapping via user-space daemon */
- if (mistat->n_uid != -1)
- sscanf(mistat->uid, "%x", (unsigned int *)&buf->st_uid);
-
- if (mistat->n_gid != -1)
- sscanf(mistat->gid, "%x", (unsigned int *)&buf->st_gid);
- }
-
- if (buf->st_uid == (unsigned short)-1)
- buf->st_uid = v9ses->uid;
- if (buf->st_gid == (unsigned short)-1)
- buf->st_gid = v9ses->gid;
-
- buf->st_mode = p9mode2unixmode(v9ses, mistat->mode);
- if ((S_ISBLK(buf->st_mode)) || (S_ISCHR(buf->st_mode))) {
- char type = 0;
- int major = -1;
- int minor = -1;
- sscanf(mistat->extension, "%c %u %u", &type, &major, &minor);
- switch (type) {
- case 'c':
- buf->st_mode &= ~S_IFBLK;
- buf->st_mode |= S_IFCHR;
- break;
- case 'b':
- break;
- default:
- dprintk(DEBUG_ERROR, "Unknown special type %c (%s)\n",
- type, mistat->extension);
- };
- buf->st_rdev = MKDEV(major, minor);
- } else
- buf->st_rdev = 0;
-
- buf->st_size = mistat->length;
-
- buf->st_blksize = sb->s_blocksize;
- buf->st_blocks =
- (buf->st_size + buf->st_blksize - 1) >> sb->s_blocksize_bits;
+ wstat->type = ~0;
+ wstat->dev = ~0;
+ wstat->qid.type = ~0;
+ wstat->qid.version = ~0;
+ *((long long *)&wstat->qid.path) = ~0;
+ wstat->mode = ~0;
+ wstat->atime = ~0;
+ wstat->mtime = ~0;
+ wstat->length = ~0;
+ wstat->name = NULL;
+ wstat->uid = NULL;
+ wstat->gid = NULL;
+ wstat->muid = NULL;
+ wstat->n_uid = ~0;
+ wstat->n_gid = ~0;
+ wstat->n_muid = ~0;
+ wstat->extension = NULL;
}
/**
@@ -312,12 +243,12 @@ v9fs_create(struct inode *dir,
struct inode *file_inode = NULL;
struct v9fs_fcall *fcall = NULL;
struct v9fs_qid qid;
- struct stat newstat;
int dirfidnum = -1;
long newfid = -1;
int result = 0;
unsigned int iounit = 0;
int wfidno = -1;
+ int err;
perm = unixmode2p9mode(v9ses, perm);
@@ -349,57 +280,64 @@ v9fs_create(struct inode *dir,
result = v9fs_t_walk(v9ses, dirfidnum, newfid, NULL, &fcall);
if (result < 0) {
- dprintk(DEBUG_ERROR, "clone error: %s\n", FCALL_ERROR(fcall));
+ PRINT_FCALL_ERROR("clone error", fcall);
v9fs_put_idpool(newfid, &v9ses->fidpool);
newfid = -1;
goto CleanUpFid;
}
kfree(fcall);
+ fcall = NULL;
result = v9fs_t_create(v9ses, newfid, (char *)file_dentry->d_name.name,
perm, open_mode, &fcall);
if (result < 0) {
- dprintk(DEBUG_ERROR, "create fails: %s(%d)\n",
- FCALL_ERROR(fcall), result);
-
+ PRINT_FCALL_ERROR("create fails", fcall);
goto CleanUpFid;
}
iounit = fcall->params.rcreate.iounit;
qid = fcall->params.rcreate.qid;
kfree(fcall);
+ fcall = NULL;
- fid = v9fs_fid_create(file_dentry, v9ses, newfid, 1);
- dprintk(DEBUG_VFS, "fid %p %d\n", fid, fid->fidcreate);
- if (!fid) {
- result = -ENOMEM;
- goto CleanUpFid;
- }
+ if (!(perm&V9FS_DMDIR)) {
+ fid = v9fs_fid_create(file_dentry, v9ses, newfid, 1);
+ dprintk(DEBUG_VFS, "fid %p %d\n", fid, fid->fidcreate);
+ if (!fid) {
+ result = -ENOMEM;
+ goto CleanUpFid;
+ }
- fid->qid = qid;
- fid->iounit = iounit;
+ fid->qid = qid;
+ fid->iounit = iounit;
+ } else {
+ err = v9fs_t_clunk(v9ses, newfid);
+ newfid = -1;
+ if (err < 0)
+ dprintk(DEBUG_ERROR, "clunk for mkdir failed: %d\n", err);
+ }
/* walk to the newly created file and put the fid in the dentry */
wfidno = v9fs_get_idpool(&v9ses->fidpool);
- if (newfid < 0) {
+ if (wfidno < 0) {
eprintk(KERN_WARNING, "no free fids available\n");
return -ENOSPC;
}
result = v9fs_t_walk(v9ses, dirfidnum, wfidno,
- (char *) file_dentry->d_name.name, NULL);
+ (char *) file_dentry->d_name.name, &fcall);
if (result < 0) {
- dprintk(DEBUG_ERROR, "clone error: %s\n", FCALL_ERROR(fcall));
+ PRINT_FCALL_ERROR("clone error", fcall);
v9fs_put_idpool(wfidno, &v9ses->fidpool);
wfidno = -1;
goto CleanUpFid;
}
+ kfree(fcall);
+ fcall = NULL;
if (!v9fs_fid_create(file_dentry, v9ses, wfidno, 0)) {
- if (!v9fs_t_clunk(v9ses, newfid, &fcall)) {
- v9fs_put_idpool(wfidno, &v9ses->fidpool);
- }
+ v9fs_put_idpool(wfidno, &v9ses->fidpool);
goto CleanUpFid;
}
@@ -409,62 +347,43 @@ v9fs_create(struct inode *dir,
(perm & V9FS_DMDEVICE))
return 0;
- result = v9fs_t_stat(v9ses, newfid, &fcall);
+ result = v9fs_t_stat(v9ses, wfidno, &fcall);
if (result < 0) {
- dprintk(DEBUG_ERROR, "stat error: %s(%d)\n", FCALL_ERROR(fcall),
- result);
+ PRINT_FCALL_ERROR("stat error", fcall);
goto CleanUpFid;
}
- v9fs_mistat2unix(fcall->params.rstat.stat, &newstat, sb);
- file_inode = v9fs_get_inode(sb, newstat.st_mode);
+ file_inode = v9fs_get_inode(sb,
+ p9mode2unixmode(v9ses, fcall->params.rstat.stat.mode));
+
if ((!file_inode) || IS_ERR(file_inode)) {
dprintk(DEBUG_ERROR, "create inode failed\n");
result = -EBADF;
goto CleanUpFid;
}
- v9fs_mistat2inode(fcall->params.rstat.stat, file_inode, sb);
+ v9fs_stat2inode(&fcall->params.rstat.stat, file_inode, sb);
kfree(fcall);
fcall = NULL;
file_dentry->d_op = &v9fs_dentry_operations;
d_instantiate(file_dentry, file_inode);
- if (perm & V9FS_DMDIR) {
- if (!v9fs_t_clunk(v9ses, newfid, &fcall))
- v9fs_put_idpool(newfid, &v9ses->fidpool);
- else
- dprintk(DEBUG_ERROR, "clunk for mkdir failed: %s\n",
- FCALL_ERROR(fcall));
- kfree(fcall);
- fid->fidopen = 0;
- fid->fidcreate = 0;
- d_drop(file_dentry);
- }
-
return 0;
CleanUpFid:
kfree(fcall);
+ fcall = NULL;
if (newfid >= 0) {
- if (!v9fs_t_clunk(v9ses, newfid, &fcall))
- v9fs_put_idpool(newfid, &v9ses->fidpool);
- else
- dprintk(DEBUG_ERROR, "clunk failed: %s\n",
- FCALL_ERROR(fcall));
-
- kfree(fcall);
+ err = v9fs_t_clunk(v9ses, newfid);
+ if (err < 0)
+ dprintk(DEBUG_ERROR, "clunk failed: %d\n", err);
}
if (wfidno >= 0) {
- if (!v9fs_t_clunk(v9ses, wfidno, &fcall))
- v9fs_put_idpool(wfidno, &v9ses->fidpool);
- else
- dprintk(DEBUG_ERROR, "clunk failed: %s\n",
- FCALL_ERROR(fcall));
-
- kfree(fcall);
+ err = v9fs_t_clunk(v9ses, wfidno);
+ if (err < 0)
+ dprintk(DEBUG_ERROR, "clunk failed: %d\n", err);
}
return result;
}
@@ -509,10 +428,9 @@ static int v9fs_remove(struct inode *dir, struct dentry *file, int rmdir)
}
result = v9fs_t_remove(v9ses, fid, &fcall);
- if (result < 0)
- dprintk(DEBUG_ERROR, "remove of file fails: %s(%d)\n",
- FCALL_ERROR(fcall), result);
- else {
+ if (result < 0) {
+ PRINT_FCALL_ERROR("remove fails", fcall);
+ } else {
v9fs_put_idpool(fid, &v9ses->fidpool);
v9fs_fid_destroy(v9fid);
}
@@ -567,7 +485,6 @@ static struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
struct v9fs_fid *fid;
struct inode *inode;
struct v9fs_fcall *fcall = NULL;
- struct stat newstat;
int dirfidnum = -1;
int newfid = -1;
int result = 0;
@@ -620,8 +537,8 @@ static struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
goto FreeFcall;
}
- v9fs_mistat2unix(fcall->params.rstat.stat, &newstat, sb);
- inode = v9fs_get_inode(sb, newstat.st_mode);
+ inode = v9fs_get_inode(sb, p9mode2unixmode(v9ses,
+ fcall->params.rstat.stat.mode));
if (IS_ERR(inode) && (PTR_ERR(inode) == -ENOSPC)) {
eprintk(KERN_WARNING, "inode alloc failes, returns %ld\n",
@@ -631,7 +548,7 @@ static struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
goto FreeFcall;
}
- inode->i_ino = v9fs_qid2ino(&fcall->params.rstat.stat->qid);
+ inode->i_ino = v9fs_qid2ino(&fcall->params.rstat.stat.qid);
fid = v9fs_fid_create(dentry, v9ses, newfid, 0);
if (fid == NULL) {
@@ -640,10 +557,10 @@ static struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
goto FreeFcall;
}
- fid->qid = fcall->params.rstat.stat->qid;
+ fid->qid = fcall->params.rstat.stat.qid;
dentry->d_op = &v9fs_dentry_operations;
- v9fs_mistat2inode(fcall->params.rstat.stat, inode, inode->i_sb);
+ v9fs_stat2inode(&fcall->params.rstat.stat, inode, inode->i_sb);
d_add(dentry, inode);
kfree(fcall);
@@ -699,7 +616,7 @@ v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
v9fs_fid_lookup(old_dentry->d_parent);
struct v9fs_fid *newdirfid =
v9fs_fid_lookup(new_dentry->d_parent);
- struct v9fs_stat *mistat = kmalloc(v9ses->maxdata, GFP_KERNEL);
+ struct v9fs_wstat wstat;
struct v9fs_fcall *fcall = NULL;
int fid = -1;
int olddirfidnum = -1;
@@ -708,9 +625,6 @@ v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
dprintk(DEBUG_VFS, "\n");
- if (!mistat)
- return -ENOMEM;
-
if ((!oldfid) || (!olddirfid) || (!newdirfid)) {
dprintk(DEBUG_ERROR, "problem with arguments\n");
return -EBADF;
@@ -734,26 +648,15 @@ v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
goto FreeFcallnBail;
}
- v9fs_blank_mistat(v9ses, mistat);
+ v9fs_blank_wstat(&wstat);
+ wstat.muid = v9ses->name;
+ wstat.name = (char *) new_dentry->d_name.name;
- strcpy(mistat->data + 1, v9ses->name);
- mistat->name = mistat->data + 1 + strlen(v9ses->name);
-
- if (new_dentry->d_name.len >
- (v9ses->maxdata - strlen(v9ses->name) - sizeof(struct v9fs_stat))) {
- dprintk(DEBUG_ERROR, "new name too long\n");
- goto FreeFcallnBail;
- }
-
- strcpy(mistat->name, new_dentry->d_name.name);
- retval = v9fs_t_wstat(v9ses, fid, mistat, &fcall);
+ retval = v9fs_t_wstat(v9ses, fid, &wstat, &fcall);
FreeFcallnBail:
- kfree(mistat);
-
if (retval < 0)
- dprintk(DEBUG_ERROR, "v9fs_t_wstat error: %s\n",
- FCALL_ERROR(fcall));
+ PRINT_FCALL_ERROR("wstat error", fcall);
kfree(fcall);
return retval;
@@ -788,7 +691,7 @@ v9fs_vfs_getattr(struct vfsmount *mnt, struct dentry *dentry,
if (err < 0)
dprintk(DEBUG_ERROR, "stat error\n");
else {
- v9fs_mistat2inode(fcall->params.rstat.stat, dentry->d_inode,
+ v9fs_stat2inode(&fcall->params.rstat.stat, dentry->d_inode,
dentry->d_inode->i_sb);
generic_fillattr(dentry->d_inode, stat);
}
@@ -809,57 +712,44 @@ static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr)
struct v9fs_session_info *v9ses = v9fs_inode2v9ses(dentry->d_inode);
struct v9fs_fid *fid = v9fs_fid_lookup(dentry);
struct v9fs_fcall *fcall = NULL;
- struct v9fs_stat *mistat = kmalloc(v9ses->maxdata, GFP_KERNEL);
+ struct v9fs_wstat wstat;
int res = -EPERM;
dprintk(DEBUG_VFS, "\n");
- if (!mistat)
- return -ENOMEM;
-
if (!fid) {
dprintk(DEBUG_ERROR,
"Couldn't find fid associated with dentry\n");
return -EBADF;
}
- v9fs_blank_mistat(v9ses, mistat);
+ v9fs_blank_wstat(&wstat);
if (iattr->ia_valid & ATTR_MODE)
- mistat->mode = unixmode2p9mode(v9ses, iattr->ia_mode);
+ wstat.mode = unixmode2p9mode(v9ses, iattr->ia_mode);
if (iattr->ia_valid & ATTR_MTIME)
- mistat->mtime = iattr->ia_mtime.tv_sec;
+ wstat.mtime = iattr->ia_mtime.tv_sec;
if (iattr->ia_valid & ATTR_ATIME)
- mistat->atime = iattr->ia_atime.tv_sec;
+ wstat.atime = iattr->ia_atime.tv_sec;
if (iattr->ia_valid & ATTR_SIZE)
- mistat->length = iattr->ia_size;
+ wstat.length = iattr->ia_size;
if (v9ses->extended) {
- char *ptr = mistat->data+1;
-
- if (iattr->ia_valid & ATTR_UID) {
- mistat->uid = ptr;
- ptr += 1+sprintf(ptr, "%08x", iattr->ia_uid);
- mistat->n_uid = iattr->ia_uid;
- }
+ if (iattr->ia_valid & ATTR_UID)
+ wstat.n_uid = iattr->ia_uid;
- if (iattr->ia_valid & ATTR_GID) {
- mistat->gid = ptr;
- ptr += 1+sprintf(ptr, "%08x", iattr->ia_gid);
- mistat->n_gid = iattr->ia_gid;
- }
+ if (iattr->ia_valid & ATTR_GID)
+ wstat.n_gid = iattr->ia_gid;
}
- res = v9fs_t_wstat(v9ses, fid->fid, mistat, &fcall);
+ res = v9fs_t_wstat(v9ses, fid->fid, &wstat, &fcall);
if (res < 0)
- dprintk(DEBUG_ERROR, "wstat error: %s\n", FCALL_ERROR(fcall));
+ PRINT_FCALL_ERROR("wstat error", fcall);
- kfree(mistat);
kfree(fcall);
-
if (res >= 0)
res = inode_setattr(dentry->d_inode, iattr);
@@ -867,51 +757,47 @@ static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr)
}
/**
- * v9fs_mistat2inode - populate an inode structure with mistat info
- * @mistat: Plan 9 metadata (mistat) structure
+ * v9fs_stat2inode - populate an inode structure with mistat info
+ * @stat: Plan 9 metadata (mistat) structure
* @inode: inode to populate
* @sb: superblock of filesystem
*
*/
void
-v9fs_mistat2inode(struct v9fs_stat *mistat, struct inode *inode,
- struct super_block *sb)
+v9fs_stat2inode(struct v9fs_stat *stat, struct inode *inode,
+ struct super_block *sb)
{
+ int n;
+ char ext[32];
struct v9fs_session_info *v9ses = sb->s_fs_info;
inode->i_nlink = 1;
- inode->i_atime.tv_sec = mistat->atime;
- inode->i_mtime.tv_sec = mistat->mtime;
- inode->i_ctime.tv_sec = mistat->mtime;
+ inode->i_atime.tv_sec = stat->atime;
+ inode->i_mtime.tv_sec = stat->mtime;
+ inode->i_ctime.tv_sec = stat->mtime;
- inode->i_uid = -1;
- inode->i_gid = -1;
+ inode->i_uid = v9ses->uid;
+ inode->i_gid = v9ses->gid;
if (v9ses->extended) {
- /* TODO: string to uid mapping via user-space daemon */
- inode->i_uid = mistat->n_uid;
- inode->i_gid = mistat->n_gid;
-
- if (mistat->n_uid == -1)
- sscanf(mistat->uid, "%x", &inode->i_uid);
-
- if (mistat->n_gid == -1)
- sscanf(mistat->gid, "%x", &inode->i_gid);
+ inode->i_uid = stat->n_uid;
+ inode->i_gid = stat->n_gid;
}
- if (inode->i_uid == -1)
- inode->i_uid = v9ses->uid;
- if (inode->i_gid == -1)
- inode->i_gid = v9ses->gid;
-
- inode->i_mode = p9mode2unixmode(v9ses, mistat->mode);
+ inode->i_mode = p9mode2unixmode(v9ses, stat->mode);
if ((S_ISBLK(inode->i_mode)) || (S_ISCHR(inode->i_mode))) {
char type = 0;
int major = -1;
int minor = -1;
- sscanf(mistat->extension, "%c %u %u", &type, &major, &minor);
+
+ n = stat->extension.len;
+ if (n > sizeof(ext)-1)
+ n = sizeof(ext)-1;
+ memmove(ext, stat->extension.str, n);
+ ext[n] = 0;
+ sscanf(ext, "%c %u %u", &type, &major, &minor);
switch (type) {
case 'c':
inode->i_mode &= ~S_IFBLK;
@@ -920,14 +806,14 @@ v9fs_mistat2inode(struct v9fs_stat *mistat, struct inode *inode,
case 'b':
break;
default:
- dprintk(DEBUG_ERROR, "Unknown special type %c (%s)\n",
- type, mistat->extension);
+ dprintk(DEBUG_ERROR, "Unknown special type %c (%.*s)\n",
+ type, stat->extension.len, stat->extension.str);
};
inode->i_rdev = MKDEV(major, minor);
} else
inode->i_rdev = 0;
- inode->i_size = mistat->length;
+ inode->i_size = stat->length;
inode->i_blksize = sb->s_blocksize;
inode->i_blocks =
@@ -955,71 +841,6 @@ ino_t v9fs_qid2ino(struct v9fs_qid *qid)
}
/**
- * v9fs_vfs_symlink - helper function to create symlinks
- * @dir: directory inode containing symlink
- * @dentry: dentry for symlink
- * @symname: symlink data
- *
- * See 9P2000.u RFC for more information
- *
- */
-
-static int
-v9fs_vfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
-{
- int retval = -EPERM;
- struct v9fs_fid *newfid;
- struct v9fs_session_info *v9ses = v9fs_inode2v9ses(dir);
- struct v9fs_fcall *fcall = NULL;
- struct v9fs_stat *mistat = kmalloc(v9ses->maxdata, GFP_KERNEL);
-
- dprintk(DEBUG_VFS, " %lu,%s,%s\n", dir->i_ino, dentry->d_name.name,
- symname);
-
- if (!mistat)
- return -ENOMEM;
-
- if (!v9ses->extended) {
- dprintk(DEBUG_ERROR, "not extended\n");
- goto FreeFcall;
- }
-
- /* issue a create */
- retval = v9fs_create(dir, dentry, S_IFLNK, 0);
- if (retval != 0)
- goto FreeFcall;
-
- newfid = v9fs_fid_lookup(dentry);
-
- /* issue a twstat */
- v9fs_blank_mistat(v9ses, mistat);
- strcpy(mistat->data + 1, symname);
- mistat->extension = mistat->data + 1;
- retval = v9fs_t_wstat(v9ses, newfid->fid, mistat, &fcall);
- if (retval < 0) {
- dprintk(DEBUG_ERROR, "v9fs_t_wstat error: %s\n",
- FCALL_ERROR(fcall));
- goto FreeFcall;
- }
-
- kfree(fcall);
-
- if (v9fs_t_clunk(v9ses, newfid->fid, &fcall)) {
- dprintk(DEBUG_ERROR, "clunk for symlink failed: %s\n",
- FCALL_ERROR(fcall));
- goto FreeFcall;
- }
-
- d_drop(dentry); /* FID - will this also clunk? */
-
- FreeFcall:
- kfree(mistat);
- kfree(fcall);
-
- return retval;
-}
-
-/**
* v9fs_readlink - read a symlink's location (internal version)
* @dentry: dentry for symlink
* @buffer: buffer to load symlink location into
@@ -1058,16 +879,17 @@ static int v9fs_readlink(struct dentry *dentry, char *buffer, int buflen)
if (!fcall)
return -EIO;
- if (!(fcall->params.rstat.stat->mode & V9FS_DMSYMLINK)) {
+ if (!(fcall->params.rstat.stat.mode & V9FS_DMSYMLINK)) {
retval = -EINVAL;
goto FreeFcall;
}
/* copy extension buffer into buffer */
- if (strlen(fcall->params.rstat.stat->extension) < buflen)
- buflen = strlen(fcall->params.rstat.stat->extension);
+ if (fcall->params.rstat.stat.extension.len < buflen)
+ buflen = fcall->params.rstat.stat.extension.len;
- memcpy(buffer, fcall->params.rstat.stat->extension, buflen + 1);
+ memcpy(buffer, fcall->params.rstat.stat.extension.str, buflen - 1);
+ buffer[buflen-1] = 0;
retval = buflen;
@@ -1157,6 +979,77 @@ static void v9fs_vfs_put_link(struct dentry *dentry, struct nameidata *nd, void
__putname(s);
}
+static int v9fs_vfs_mkspecial(struct inode *dir, struct dentry *dentry,
+ int mode, const char *extension)
+{
+ int err, retval;
+ struct v9fs_session_info *v9ses;
+ struct v9fs_fcall *fcall;
+ struct v9fs_fid *fid;
+ struct v9fs_wstat wstat;
+
+ v9ses = v9fs_inode2v9ses(dir);
+ retval = -EPERM;
+ fcall = NULL;
+
+ if (!v9ses->extended) {
+ dprintk(DEBUG_ERROR, "not extended\n");
+ goto free_mem;
+ }
+
+ /* issue a create */
+ retval = v9fs_create(dir, dentry, mode, 0);
+ if (retval != 0)
+ goto free_mem;
+
+ fid = v9fs_fid_get_created(dentry);
+ if (!fid) {
+ dprintk(DEBUG_ERROR, "couldn't resolve fid from dentry\n");
+ goto free_mem;
+ }
+
+ /* issue a Twstat */
+ v9fs_blank_wstat(&wstat);
+ wstat.muid = v9ses->name;
+ wstat.extension = (char *) extension;
+ retval = v9fs_t_wstat(v9ses, fid->fid, &wstat, &fcall);
+ if (retval < 0) {
+ PRINT_FCALL_ERROR("wstat error", fcall);
+ goto free_mem;
+ }
+
+ err = v9fs_t_clunk(v9ses, fid->fid);
+ if (err < 0) {
+ dprintk(DEBUG_ERROR, "clunk failed: %d\n", err);
+ goto free_mem;
+ }
+
+ d_drop(dentry); /* FID - will this also clunk? */
+
+free_mem:
+ kfree(fcall);
+ return retval;
+}
+
+/**
+ * v9fs_vfs_symlink - helper function to create symlinks
+ * @dir: directory inode containing symlink
+ * @dentry: dentry for symlink
+ * @symname: symlink data
+ *
+ * See 9P2000.u RFC for more information
+ *
+ */
+
+static int
+v9fs_vfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
+{
+ dprintk(DEBUG_VFS, " %lu,%s,%s\n", dir->i_ino, dentry->d_name.name,
+ symname);
+
+ return v9fs_vfs_mkspecial(dir, dentry, S_IFLNK, symname);
+}
+
/**
* v9fs_vfs_link - create a hardlink
* @old_dentry: dentry for file to link to
@@ -1173,64 +1066,24 @@ static int
v9fs_vfs_link(struct dentry *old_dentry, struct inode *dir,
struct dentry *dentry)
{
- int retval = -EPERM;
- struct v9fs_session_info *v9ses = v9fs_inode2v9ses(dir);
- struct v9fs_fcall *fcall = NULL;
- struct v9fs_stat *mistat = kmalloc(v9ses->maxdata, GFP_KERNEL);
- struct v9fs_fid *oldfid = v9fs_fid_lookup(old_dentry);
- struct v9fs_fid *newfid = NULL;
- char *symname = __getname();
+ int retval;
+ struct v9fs_fid *oldfid;
+ char *name;
dprintk(DEBUG_VFS, " %lu,%s,%s\n", dir->i_ino, dentry->d_name.name,
old_dentry->d_name.name);
- if (!v9ses->extended) {
- dprintk(DEBUG_ERROR, "not extended\n");
- goto FreeMem;
- }
-
- /* get fid of old_dentry */
- sprintf(symname, "hardlink(%d)\n", oldfid->fid);
-
- /* issue a create */
- retval = v9fs_create(dir, dentry, V9FS_DMLINK, 0);
- if (retval != 0)
- goto FreeMem;
-
- newfid = v9fs_fid_lookup(dentry);
- if (!newfid) {
- dprintk(DEBUG_ERROR, "couldn't resolve fid from dentry\n");
- goto FreeMem;
- }
-
- /* issue a twstat */
- v9fs_blank_mistat(v9ses, mistat);
- strcpy(mistat->data + 1, symname);
- mistat->extension = mistat->data + 1;
- retval = v9fs_t_wstat(v9ses, newfid->fid, mistat, &fcall);
- if (retval < 0) {
- dprintk(DEBUG_ERROR, "v9fs_t_wstat error: %s\n",
- FCALL_ERROR(fcall));
- goto FreeMem;
- }
-
- kfree(fcall);
-
- if (v9fs_t_clunk(v9ses, newfid->fid, &fcall)) {
- dprintk(DEBUG_ERROR, "clunk for symlink failed: %s\n",
- FCALL_ERROR(fcall));
- goto FreeMem;
+ oldfid = v9fs_fid_lookup(old_dentry);
+ if (!oldfid) {
+ dprintk(DEBUG_ERROR, "can't find oldfid\n");
+ return -EPERM;
}
- d_drop(dentry); /* FID - will this also clunk? */
-
- kfree(fcall);
- fcall = NULL;
+ name = __getname();
+ sprintf(name, "hardlink(%d)\n", oldfid->fid);
+ retval = v9fs_vfs_mkspecial(dir, dentry, V9FS_DMLINK, name);
+ __putname(name);
- FreeMem:
- kfree(mistat);
- kfree(fcall);
- __putname(symname);
return retval;
}
@@ -1246,82 +1099,30 @@ v9fs_vfs_link(struct dentry *old_dentry, struct inode *dir,
static int
v9fs_vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev)
{
- int retval = -EPERM;
- struct v9fs_fid *newfid;
- struct v9fs_session_info *v9ses = v9fs_inode2v9ses(dir);
- struct v9fs_fcall *fcall = NULL;
- struct v9fs_stat *mistat = kmalloc(v9ses->maxdata, GFP_KERNEL);
- char *symname = __getname();
+ int retval;
+ char *name;
dprintk(DEBUG_VFS, " %lu,%s mode: %x MAJOR: %u MINOR: %u\n", dir->i_ino,
dentry->d_name.name, mode, MAJOR(rdev), MINOR(rdev));
- if (!mistat)
- return -ENOMEM;
-
- if (!new_valid_dev(rdev)) {
- retval = -EINVAL;
- goto FreeMem;
- }
-
- if (!v9ses->extended) {
- dprintk(DEBUG_ERROR, "not extended\n");
- goto FreeMem;
- }
-
- /* issue a create */
- retval = v9fs_create(dir, dentry, mode, 0);
-
- if (retval != 0)
- goto FreeMem;
-
- newfid = v9fs_fid_lookup(dentry);
- if (!newfid) {
- dprintk(DEBUG_ERROR, "coudn't resove fid from dentry\n");
- retval = -EINVAL;
- goto FreeMem;
- }
+ if (!new_valid_dev(rdev))
+ return -EINVAL;
+ name = __getname();
/* build extension */
if (S_ISBLK(mode))
- sprintf(symname, "b %u %u", MAJOR(rdev), MINOR(rdev));
+ sprintf(name, "b %u %u", MAJOR(rdev), MINOR(rdev));
else if (S_ISCHR(mode))
- sprintf(symname, "c %u %u", MAJOR(rdev), MINOR(rdev));
+ sprintf(name, "c %u %u", MAJOR(rdev), MINOR(rdev));
else if (S_ISFIFO(mode))
- ; /* DO NOTHING */
+ *name = 0;
else {
- retval = -EINVAL;
- goto FreeMem;
- }
-
- if (!S_ISFIFO(mode)) {
- /* issue a twstat */
- v9fs_blank_mistat(v9ses, mistat);
- strcpy(mistat->data + 1, symname);
- mistat->extension = mistat->data + 1;
- retval = v9fs_t_wstat(v9ses, newfid->fid, mistat, &fcall);
- if (retval < 0) {
- dprintk(DEBUG_ERROR, "v9fs_t_wstat error: %s\n",
- FCALL_ERROR(fcall));
- goto FreeMem;
- }
+ __putname(name);
+ return -EINVAL;
}
- /* need to update dcache so we show up */
- kfree(fcall);
-
- if (v9fs_t_clunk(v9ses, newfid->fid, &fcall)) {
- dprintk(DEBUG_ERROR, "clunk for symlink failed: %s\n",
- FCALL_ERROR(fcall));
- goto FreeMem;
- }
-
- d_drop(dentry); /* FID - will this also clunk? */
-
- FreeMem:
- kfree(mistat);
- kfree(fcall);
- __putname(symname);
+ retval = v9fs_vfs_mkspecial(dir, dentry, mode, name);
+ __putname(name);
return retval;
}
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index 82c5b00..ae0f06b 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -44,7 +44,6 @@
#include "v9fs.h"
#include "9p.h"
#include "v9fs_vfs.h"
-#include "conv.h"
#include "fid.h"
static void v9fs_clear_inode(struct inode *);
@@ -123,12 +122,13 @@ static struct super_block *v9fs_get_sb(struct file_system_type
dprintk(DEBUG_VFS, " \n");
- v9ses = kcalloc(1, sizeof(struct v9fs_session_info), GFP_KERNEL);
+ v9ses = kzalloc(sizeof(struct v9fs_session_info), GFP_KERNEL);
if (!v9ses)
return ERR_PTR(-ENOMEM);
if ((newfid = v9fs_session_init(v9ses, dev_name, data)) < 0) {
dprintk(DEBUG_ERROR, "problem initiating session\n");
+ kfree(v9ses);
return ERR_PTR(newfid);
}
@@ -157,7 +157,7 @@ static struct super_block *v9fs_get_sb(struct file_system_type
stat_result = v9fs_t_stat(v9ses, newfid, &fcall);
if (stat_result < 0) {
dprintk(DEBUG_ERROR, "stat error\n");
- v9fs_t_clunk(v9ses, newfid, NULL);
+ v9fs_t_clunk(v9ses, newfid);
v9fs_put_idpool(newfid, &v9ses->fidpool);
} else {
/* Setup the Root Inode */
@@ -167,10 +167,10 @@ static struct super_block *v9fs_get_sb(struct file_system_type
goto put_back_sb;
}
- root_fid->qid = fcall->params.rstat.stat->qid;
+ root_fid->qid = fcall->params.rstat.stat.qid;
root->d_inode->i_ino =
- v9fs_qid2ino(&fcall->params.rstat.stat->qid);
- v9fs_mistat2inode(fcall->params.rstat.stat, root->d_inode, sb);
+ v9fs_qid2ino(&fcall->params.rstat.stat.qid);
+ v9fs_stat2inode(&fcall->params.rstat.stat, root->d_inode, sb);
}
kfree(fcall);
diff --git a/fs/Kconfig.binfmt b/fs/Kconfig.binfmt
index 175b2e8..f3d3d81 100644
--- a/fs/Kconfig.binfmt
+++ b/fs/Kconfig.binfmt
@@ -1,6 +1,6 @@
config BINFMT_ELF
bool "Kernel support for ELF binaries"
- depends on MMU
+ depends on MMU && (BROKEN || !FRV)
default y
---help---
ELF (Executable and Linkable Format) is a format for libraries and
diff --git a/fs/Makefile b/fs/Makefile
index 7367611..35e9aec 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -10,7 +10,7 @@ obj-y := open.o read_write.o file_table.o buffer.o bio.o super.o \
ioctl.o readdir.o select.o fifo.o locks.o dcache.o inode.o \
attr.o bad_inode.o file.o filesystems.o namespace.o aio.o \
seq_file.o xattr.o libfs.o fs-writeback.o mpage.o direct-io.o \
- ioprio.o pnode.o
+ ioprio.o pnode.o drop_caches.o
obj-$(CONFIG_INOTIFY) += inotify.o
obj-$(CONFIG_EPOLL) += eventpoll.o
diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 6682d6d..5c61c24 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -137,7 +137,7 @@ static inline void afs_dir_check_page(struct inode *dir, struct page *page)
#endif
/* determine how many magic numbers there should be in this page */
- latter = dir->i_size - (page->index << PAGE_CACHE_SHIFT);
+ latter = dir->i_size - page_offset(page);
if (latter >= PAGE_SIZE)
qty = PAGE_SIZE;
else
diff --git a/fs/afs/volume.h b/fs/afs/volume.h
index 1e69188..bfdcf19 100644
--- a/fs/afs/volume.h
+++ b/fs/afs/volume.h
@@ -18,8 +18,6 @@
#include "kafsasyncd.h"
#include "cache.h"
-#define __packed __attribute__((packed))
-
typedef enum {
AFS_VLUPD_SLEEP, /* sleeping waiting for update timer to fire */
AFS_VLUPD_PENDING, /* on pending queue */
@@ -115,7 +113,7 @@ struct afs_volume
struct cachefs_cookie *cache; /* caching cookie */
#endif
afs_volid_t vid; /* volume ID */
- afs_voltype_t __packed type; /* type of volume */
+ afs_voltype_t type; /* type of volume */
char type_force; /* force volume type (suppress R/O -> R/W) */
unsigned short nservers; /* number of server slots filled */
unsigned short rjservers; /* number of servers discarded due to -ENOMEDIUM */
diff --git a/fs/aio.c b/fs/aio.c
index 5a28b69..aec2b19 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -29,7 +29,6 @@
#include <linux/highmem.h>
#include <linux/workqueue.h>
#include <linux/security.h>
-#include <linux/rcuref.h>
#include <asm/kmap_types.h>
#include <asm/uaccess.h>
@@ -514,7 +513,7 @@ static int __aio_put_req(struct kioctx *ctx, struct kiocb *req)
/* Must be done under the lock to serialise against cancellation.
* Call this aio_fput as it duplicates fput via the fput_work.
*/
- if (unlikely(rcuref_dec_and_test(&req->ki_filp->f_count))) {
+ if (unlikely(atomic_dec_and_test(&req->ki_filp->f_count))) {
get_ioctx(ctx);
spin_lock(&fput_lock);
list_add(&req->ki_list, &fput_head);
diff --git a/fs/attr.c b/fs/attr.c
index 67bcd9b..b347325 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -67,20 +67,12 @@ EXPORT_SYMBOL(inode_change_ok);
int inode_setattr(struct inode * inode, struct iattr * attr)
{
unsigned int ia_valid = attr->ia_valid;
- int error = 0;
-
- if (ia_valid & ATTR_SIZE) {
- if (attr->ia_size != i_size_read(inode)) {
- error = vmtruncate(inode, attr->ia_size);
- if (error || (ia_valid == ATTR_SIZE))
- goto out;
- } else {
- /*
- * We skipped the truncate but must still update
- * timestamps
- */
- ia_valid |= ATTR_MTIME|ATTR_CTIME;
- }
+
+ if (ia_valid & ATTR_SIZE &&
+ attr->ia_size != i_size_read(inode)) {
+ int error = vmtruncate(inode, attr->ia_size);
+ if (error)
+ return error;
}
if (ia_valid & ATTR_UID)
@@ -104,8 +96,8 @@ int inode_setattr(struct inode * inode, struct iattr * attr)
inode->i_mode = mode;
}
mark_inode_dirty(inode);
-out:
- return error;
+
+ return 0;
}
EXPORT_SYMBOL(inode_setattr);
diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h
index fca83e2..385bed0 100644
--- a/fs/autofs4/autofs_i.h
+++ b/fs/autofs4/autofs_i.h
@@ -209,7 +209,7 @@ static inline int simple_empty_nolock(struct dentry *dentry)
struct dentry *child;
int ret = 0;
- list_for_each_entry(child, &dentry->d_subdirs, d_child)
+ list_for_each_entry(child, &dentry->d_subdirs, d_u.d_child)
if (simple_positive(child))
goto out;
ret = 1;
diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c
index feb6ac4..dc39589 100644
--- a/fs/autofs4/expire.c
+++ b/fs/autofs4/expire.c
@@ -105,7 +105,7 @@ repeat:
next = this_parent->d_subdirs.next;
resume:
while (next != &this_parent->d_subdirs) {
- struct dentry *dentry = list_entry(next, struct dentry, d_child);
+ struct dentry *dentry = list_entry(next, struct dentry, d_u.d_child);
/* Negative dentry - give up */
if (!simple_positive(dentry)) {
@@ -138,7 +138,7 @@ resume:
}
if (this_parent != top) {
- next = this_parent->d_child.next;
+ next = this_parent->d_u.d_child.next;
this_parent = this_parent->d_parent;
goto resume;
}
@@ -163,7 +163,7 @@ repeat:
next = this_parent->d_subdirs.next;
resume:
while (next != &this_parent->d_subdirs) {
- struct dentry *dentry = list_entry(next, struct dentry, d_child);
+ struct dentry *dentry = list_entry(next, struct dentry, d_u.d_child);
/* Negative dentry - give up */
if (!simple_positive(dentry)) {
@@ -199,7 +199,7 @@ cont:
}
if (this_parent != parent) {
- next = this_parent->d_child.next;
+ next = this_parent->d_u.d_child.next;
this_parent = this_parent->d_parent;
goto resume;
}
@@ -238,7 +238,7 @@ static struct dentry *autofs4_expire(struct super_block *sb,
/* On exit from the loop expire is set to a dgot dentry
* to expire or it's NULL */
while ( next != &root->d_subdirs ) {
- struct dentry *dentry = list_entry(next, struct dentry, d_child);
+ struct dentry *dentry = list_entry(next, struct dentry, d_u.d_child);
/* Negative dentry - give up */
if ( !simple_positive(dentry) ) {
@@ -302,7 +302,7 @@ next:
expired, (int)expired->d_name.len, expired->d_name.name);
spin_lock(&dcache_lock);
list_del(&expired->d_parent->d_subdirs);
- list_add(&expired->d_parent->d_subdirs, &expired->d_child);
+ list_add(&expired->d_parent->d_subdirs, &expired->d_u.d_child);
spin_unlock(&dcache_lock);
return expired;
}
diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index 818b37b..2d30828 100644
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -91,7 +91,7 @@ repeat:
next = this_parent->d_subdirs.next;
resume:
while (next != &this_parent->d_subdirs) {
- struct dentry *dentry = list_entry(next, struct dentry, d_child);
+ struct dentry *dentry = list_entry(next, struct dentry, d_u.d_child);
/* Negative dentry - don`t care */
if (!simple_positive(dentry)) {
@@ -117,7 +117,7 @@ resume:
if (this_parent != sbi->root) {
struct dentry *dentry = this_parent;
- next = this_parent->d_child.next;
+ next = this_parent->d_u.d_child.next;
this_parent = this_parent->d_parent;
spin_unlock(&dcache_lock);
DPRINTK("parent dentry %p %.*s",
diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index 2a771ec..2241405 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -143,7 +143,8 @@ static int autofs4_dcache_readdir(struct file * filp, void * dirent, filldir_t f
}
while(1) {
- struct dentry *de = list_entry(list, struct dentry, d_child);
+ struct dentry *de = list_entry(list,
+ struct dentry, d_u.d_child);
if (!d_unhashed(de) && de->d_inode) {
spin_unlock(&dcache_lock);
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index f36f221..80ca932 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -58,7 +58,7 @@ extern int dump_fpu (struct pt_regs *, elf_fpregset_t *);
* If we don't support core dumping, then supply a NULL so we
* don't even try.
*/
-#ifdef USE_ELF_CORE_DUMP
+#if defined(USE_ELF_CORE_DUMP) && defined(CONFIG_ELF_CORE)
static int elf_core_dump(long signr, struct pt_regs * regs, struct file * file);
#else
#define elf_core_dump NULL
@@ -288,11 +288,17 @@ static unsigned long elf_map(struct file *filep, unsigned long addr,
struct elf_phdr *eppnt, int prot, int type)
{
unsigned long map_addr;
+ unsigned long pageoffset = ELF_PAGEOFFSET(eppnt->p_vaddr);
down_write(&current->mm->mmap_sem);
- map_addr = do_mmap(filep, ELF_PAGESTART(addr),
- eppnt->p_filesz + ELF_PAGEOFFSET(eppnt->p_vaddr), prot, type,
- eppnt->p_offset - ELF_PAGEOFFSET(eppnt->p_vaddr));
+ /* mmap() will return -EINVAL if given a zero size, but a
+ * segment with zero filesize is perfectly valid */
+ if (eppnt->p_filesz + pageoffset)
+ map_addr = do_mmap(filep, ELF_PAGESTART(addr),
+ eppnt->p_filesz + pageoffset, prot, type,
+ eppnt->p_offset - pageoffset);
+ else
+ map_addr = ELF_PAGESTART(addr);
up_write(&current->mm->mmap_sem);
return(map_addr);
}
@@ -1107,7 +1113,7 @@ out:
* Note that some platforms still use traditional core dumps and not
* the ELF core dump. Each platform can select it as appropriate.
*/
-#ifdef USE_ELF_CORE_DUMP
+#if defined(USE_ELF_CORE_DUMP) && defined(CONFIG_ELF_CORE)
/*
* ELF core dumper
diff --git a/fs/buffer.c b/fs/buffer.c
index 5287be1..55f0975a 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -153,14 +153,8 @@ int sync_blockdev(struct block_device *bdev)
{
int ret = 0;
- if (bdev) {
- int err;
-
- ret = filemap_fdatawrite(bdev->bd_inode->i_mapping);
- err = filemap_fdatawait(bdev->bd_inode->i_mapping);
- if (!ret)
- ret = err;
- }
+ if (bdev)
+ ret = filemap_write_and_wait(bdev->bd_inode->i_mapping);
return ret;
}
EXPORT_SYMBOL(sync_blockdev);
@@ -1768,7 +1762,7 @@ static int __block_write_full_page(struct inode *inode, struct page *page,
* handle that here by just cleaning them.
*/
- block = page->index << (PAGE_CACHE_SHIFT - inode->i_blkbits);
+ block = (sector_t)page->index << (PAGE_CACHE_SHIFT - inode->i_blkbits);
head = page_buffers(page);
bh = head;
@@ -2160,11 +2154,12 @@ int block_read_full_page(struct page *page, get_block_t *get_block)
* truncates. Uses prepare/commit_write to allow the filesystem to
* deal with the hole.
*/
-int generic_cont_expand(struct inode *inode, loff_t size)
+static int __generic_cont_expand(struct inode *inode, loff_t size,
+ pgoff_t index, unsigned int offset)
{
struct address_space *mapping = inode->i_mapping;
struct page *page;
- unsigned long index, offset, limit;
+ unsigned long limit;
int err;
err = -EFBIG;
@@ -2176,24 +2171,24 @@ int generic_cont_expand(struct inode *inode, loff_t size)
if (size > inode->i_sb->s_maxbytes)
goto out;
- offset = (size & (PAGE_CACHE_SIZE-1)); /* Within page */
-
- /* ugh. in prepare/commit_write, if from==to==start of block, we
- ** skip the prepare. make sure we never send an offset for the start
- ** of a block
- */
- if ((offset & (inode->i_sb->s_blocksize - 1)) == 0) {
- offset++;
- }
- index = size >> PAGE_CACHE_SHIFT;
err = -ENOMEM;
page = grab_cache_page(mapping, index);
if (!page)
goto out;
err = mapping->a_ops->prepare_write(NULL, page, offset, offset);
- if (!err) {
- err = mapping->a_ops->commit_write(NULL, page, offset, offset);
+ if (err) {
+ /*
+ * ->prepare_write() may have instantiated a few blocks
+ * outside i_size. Trim these off again.
+ */
+ unlock_page(page);
+ page_cache_release(page);
+ vmtruncate(inode, inode->i_size);
+ goto out;
}
+
+ err = mapping->a_ops->commit_write(NULL, page, offset, offset);
+
unlock_page(page);
page_cache_release(page);
if (err > 0)
@@ -2202,6 +2197,36 @@ out:
return err;
}
+int generic_cont_expand(struct inode *inode, loff_t size)
+{
+ pgoff_t index;
+ unsigned int offset;
+
+ offset = (size & (PAGE_CACHE_SIZE - 1)); /* Within page */
+
+ /* ugh. in prepare/commit_write, if from==to==start of block, we
+ ** skip the prepare. make sure we never send an offset for the start
+ ** of a block
+ */
+ if ((offset & (inode->i_sb->s_blocksize - 1)) == 0) {
+ /* caller must handle this extra byte. */
+ offset++;
+ }
+ index = size >> PAGE_CACHE_SHIFT;
+
+ return __generic_cont_expand(inode, size, index, offset);
+}
+
+int generic_cont_expand_simple(struct inode *inode, loff_t size)
+{
+ loff_t pos = size - 1;
+ pgoff_t index = pos >> PAGE_CACHE_SHIFT;
+ unsigned int offset = (pos & (PAGE_CACHE_SIZE - 1)) + 1;
+
+ /* prepare/commit_write can handle even if from==to==start of block. */
+ return __generic_cont_expand(inode, size, index, offset);
+}
+
/*
* For moronic filesystems that do not allow holes in file.
* We may have to extend the file.
@@ -2610,7 +2635,7 @@ int block_truncate_page(struct address_space *mapping,
pgoff_t index = from >> PAGE_CACHE_SHIFT;
unsigned offset = from & (PAGE_CACHE_SIZE-1);
unsigned blocksize;
- pgoff_t iblock;
+ sector_t iblock;
unsigned length, pos;
struct inode *inode = mapping->host;
struct page *page;
@@ -2626,7 +2651,7 @@ int block_truncate_page(struct address_space *mapping,
return 0;
length = blocksize - length;
- iblock = index << (PAGE_CACHE_SHIFT - inode->i_blkbits);
+ iblock = (sector_t)index << (PAGE_CACHE_SHIFT - inode->i_blkbits);
page = grab_cache_page(mapping, index);
err = -ENOMEM;
@@ -3145,6 +3170,7 @@ EXPORT_SYMBOL(fsync_bdev);
EXPORT_SYMBOL(generic_block_bmap);
EXPORT_SYMBOL(generic_commit_write);
EXPORT_SYMBOL(generic_cont_expand);
+EXPORT_SYMBOL(generic_cont_expand_simple);
EXPORT_SYMBOL(init_buffer);
EXPORT_SYMBOL(invalidate_bdev);
EXPORT_SYMBOL(ll_rw_block);
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 14a1c72..5ade53d 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -127,8 +127,7 @@ static inline int cifs_open_inode_helper(struct inode *inode, struct file *file,
if (file->f_dentry->d_inode->i_mapping) {
/* BB no need to lock inode until after invalidate
since namei code should already have it locked? */
- filemap_fdatawrite(file->f_dentry->d_inode->i_mapping);
- filemap_fdatawait(file->f_dentry->d_inode->i_mapping);
+ filemap_write_and_wait(file->f_dentry->d_inode->i_mapping);
}
cFYI(1, ("invalidating remote inode since open detected it "
"changed"));
@@ -419,8 +418,7 @@ static int cifs_reopen_file(struct inode *inode, struct file *file,
pCifsInode = CIFS_I(inode);
if (pCifsInode) {
if (can_flush) {
- filemap_fdatawrite(inode->i_mapping);
- filemap_fdatawait(inode->i_mapping);
+ filemap_write_and_wait(inode->i_mapping);
/* temporarily disable caching while we
go to server to get inode info */
pCifsInode->clientCanCacheAll = FALSE;
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 411c1f7..9558f51 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1148,8 +1148,7 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
/* BB check if we need to refresh inode from server now ? BB */
/* need to flush data before changing file size on server */
- filemap_fdatawrite(direntry->d_inode->i_mapping);
- filemap_fdatawait(direntry->d_inode->i_mapping);
+ filemap_write_and_wait(direntry->d_inode->i_mapping);
if (attrs->ia_valid & ATTR_SIZE) {
/* To avoid spurious oplock breaks from server, in the case of
diff --git a/fs/coda/cache.c b/fs/coda/cache.c
index 80072fd..c607d92 100644
--- a/fs/coda/cache.c
+++ b/fs/coda/cache.c
@@ -93,7 +93,7 @@ static void coda_flag_children(struct dentry *parent, int flag)
spin_lock(&dcache_lock);
list_for_each(child, &parent->d_subdirs)
{
- de = list_entry(child, struct dentry, d_child);
+ de = list_entry(child, struct dentry, d_u.d_child);
/* don't know what to do with negative dentries */
if ( ! de->d_inode )
continue;
diff --git a/fs/compat.c b/fs/compat.c
index 55ac032..271b75d 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -494,9 +494,21 @@ asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
ret = sys_fcntl(fd, cmd, (unsigned long)&f);
set_fs(old_fs);
if (cmd == F_GETLK && ret == 0) {
- if ((f.l_start >= COMPAT_OFF_T_MAX) ||
- ((f.l_start + f.l_len) > COMPAT_OFF_T_MAX))
+ /* GETLK was successfule and we need to return the data...
+ * but it needs to fit in the compat structure.
+ * l_start shouldn't be too big, unless the original
+ * start + end is greater than COMPAT_OFF_T_MAX, in which
+ * case the app was asking for trouble, so we return
+ * -EOVERFLOW in that case.
+ * l_len could be too big, in which case we just truncate it,
+ * and only allow the app to see that part of the conflicting
+ * lock that might make sense to it anyway
+ */
+
+ if (f.l_start > COMPAT_OFF_T_MAX)
ret = -EOVERFLOW;
+ if (f.l_len > COMPAT_OFF_T_MAX)
+ f.l_len = COMPAT_OFF_T_MAX;
if (ret == 0)
ret = put_compat_flock(&f, compat_ptr(arg));
}
@@ -515,9 +527,11 @@ asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
(unsigned long)&f);
set_fs(old_fs);
if (cmd == F_GETLK64 && ret == 0) {
- if ((f.l_start >= COMPAT_LOFF_T_MAX) ||
- ((f.l_start + f.l_len) > COMPAT_LOFF_T_MAX))
+ /* need to return lock information - see above for commentary */
+ if (f.l_start > COMPAT_LOFF_T_MAX)
ret = -EOVERFLOW;
+ if (f.l_len > COMPAT_LOFF_T_MAX)
+ f.l_len = COMPAT_LOFF_T_MAX;
if (ret == 0)
ret = put_compat_flock64(&f, compat_ptr(arg));
}
diff --git a/fs/dcache.c b/fs/dcache.c
index 17e43913..1536f15 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -71,7 +71,7 @@ struct dentry_stat_t dentry_stat = {
static void d_callback(struct rcu_head *head)
{
- struct dentry * dentry = container_of(head, struct dentry, d_rcu);
+ struct dentry * dentry = container_of(head, struct dentry, d_u.d_rcu);
if (dname_external(dentry))
kfree(dentry->d_name.name);
@@ -86,7 +86,7 @@ static void d_free(struct dentry *dentry)
{
if (dentry->d_op && dentry->d_op->d_release)
dentry->d_op->d_release(dentry);
- call_rcu(&dentry->d_rcu, d_callback);
+ call_rcu(&dentry->d_u.d_rcu, d_callback);
}
/*
@@ -193,7 +193,7 @@ kill_it: {
list_del(&dentry->d_lru);
dentry_stat.nr_unused--;
}
- list_del(&dentry->d_child);
+ list_del(&dentry->d_u.d_child);
dentry_stat.nr_dentry--; /* For d_free, below */
/*drops the locks, at that point nobody can reach this dentry */
dentry_iput(dentry);
@@ -367,7 +367,7 @@ static inline void prune_one_dentry(struct dentry * dentry)
struct dentry * parent;
__d_drop(dentry);
- list_del(&dentry->d_child);
+ list_del(&dentry->d_u.d_child);
dentry_stat.nr_dentry--; /* For d_free, below */
dentry_iput(dentry);
parent = dentry->d_parent;
@@ -518,7 +518,7 @@ repeat:
resume:
while (next != &this_parent->d_subdirs) {
struct list_head *tmp = next;
- struct dentry *dentry = list_entry(tmp, struct dentry, d_child);
+ struct dentry *dentry = list_entry(tmp, struct dentry, d_u.d_child);
next = tmp->next;
/* Have we found a mount point ? */
if (d_mountpoint(dentry))
@@ -532,7 +532,7 @@ resume:
* All done at this level ... ascend and resume the search.
*/
if (this_parent != parent) {
- next = this_parent->d_child.next;
+ next = this_parent->d_u.d_child.next;
this_parent = this_parent->d_parent;
goto resume;
}
@@ -569,7 +569,7 @@ repeat:
resume:
while (next != &this_parent->d_subdirs) {
struct list_head *tmp = next;
- struct dentry *dentry = list_entry(tmp, struct dentry, d_child);
+ struct dentry *dentry = list_entry(tmp, struct dentry, d_u.d_child);
next = tmp->next;
if (!list_empty(&dentry->d_lru)) {
@@ -610,7 +610,7 @@ dentry->d_parent->d_name.name, dentry->d_name.name, found);
* All done at this level ... ascend and resume the search.
*/
if (this_parent != parent) {
- next = this_parent->d_child.next;
+ next = this_parent->d_u.d_child.next;
this_parent = this_parent->d_parent;
#ifdef DCACHE_DEBUG
printk(KERN_DEBUG "select_parent: ascending to %s/%s, found=%d\n",
@@ -753,12 +753,12 @@ struct dentry *d_alloc(struct dentry * parent, const struct qstr *name)
dentry->d_parent = dget(parent);
dentry->d_sb = parent->d_sb;
} else {
- INIT_LIST_HEAD(&dentry->d_child);
+ INIT_LIST_HEAD(&dentry->d_u.d_child);
}
spin_lock(&dcache_lock);
if (parent)
- list_add(&dentry->d_child, &parent->d_subdirs);
+ list_add(&dentry->d_u.d_child, &parent->d_subdirs);
dentry_stat.nr_dentry++;
spin_unlock(&dcache_lock);
@@ -1310,8 +1310,8 @@ already_unhashed:
/* Unhash the target: dput() will then get rid of it */
__d_drop(target);
- list_del(&dentry->d_child);
- list_del(&target->d_child);
+ list_del(&dentry->d_u.d_child);
+ list_del(&target->d_u.d_child);
/* Switch the names.. */
switch_names(dentry, target);
@@ -1322,15 +1322,15 @@ already_unhashed:
if (IS_ROOT(dentry)) {
dentry->d_parent = target->d_parent;
target->d_parent = target;
- INIT_LIST_HEAD(&target->d_child);
+ INIT_LIST_HEAD(&target->d_u.d_child);
} else {
do_switch(dentry->d_parent, target->d_parent);
/* And add them back to the (new) parent lists */
- list_add(&target->d_child, &target->d_parent->d_subdirs);
+ list_add(&target->d_u.d_child, &target->d_parent->d_subdirs);
}
- list_add(&dentry->d_child, &dentry->d_parent->d_subdirs);
+ list_add(&dentry->d_u.d_child, &dentry->d_parent->d_subdirs);
spin_unlock(&target->d_lock);
spin_unlock(&dentry->d_lock);
write_sequnlock(&rename_lock);
@@ -1568,7 +1568,7 @@ repeat:
resume:
while (next != &this_parent->d_subdirs) {
struct list_head *tmp = next;
- struct dentry *dentry = list_entry(tmp, struct dentry, d_child);
+ struct dentry *dentry = list_entry(tmp, struct dentry, d_u.d_child);
next = tmp->next;
if (d_unhashed(dentry)||!dentry->d_inode)
continue;
@@ -1579,7 +1579,7 @@ resume:
atomic_dec(&dentry->d_count);
}
if (this_parent != root) {
- next = this_parent->d_child.next;
+ next = this_parent->d_u.d_child.next;
atomic_dec(&this_parent->d_count);
this_parent = this_parent->d_parent;
goto resume;
diff --git a/fs/drop_caches.c b/fs/drop_caches.c
new file mode 100644
index 0000000..4e47623
--- /dev/null
+++ b/fs/drop_caches.c
@@ -0,0 +1,68 @@
+/*
+ * Implement the manual drop-all-pagecache function
+ */
+
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/fs.h>
+#include <linux/writeback.h>
+#include <linux/sysctl.h>
+#include <linux/gfp.h>
+
+/* A global variable is a bit ugly, but it keeps the code simple */
+int sysctl_drop_caches;
+
+static void drop_pagecache_sb(struct super_block *sb)
+{
+ struct inode *inode;
+
+ spin_lock(&inode_lock);
+ list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
+ if (inode->i_state & (I_FREEING|I_WILL_FREE))
+ continue;
+ invalidate_inode_pages(inode->i_mapping);
+ }
+ spin_unlock(&inode_lock);
+}
+
+void drop_pagecache(void)
+{
+ struct super_block *sb;
+
+ spin_lock(&sb_lock);
+restart:
+ list_for_each_entry(sb, &super_blocks, s_list) {
+ sb->s_count++;
+ spin_unlock(&sb_lock);
+ down_read(&sb->s_umount);
+ if (sb->s_root)
+ drop_pagecache_sb(sb);
+ up_read(&sb->s_umount);
+ spin_lock(&sb_lock);
+ if (__put_super_and_need_restart(sb))
+ goto restart;
+ }
+ spin_unlock(&sb_lock);
+}
+
+void drop_slab(void)
+{
+ int nr_objects;
+
+ do {
+ nr_objects = shrink_slab(1000, GFP_KERNEL, 1000);
+ } while (nr_objects > 10);
+}
+
+int drop_caches_sysctl_handler(ctl_table *table, int write,
+ struct file *file, void __user *buffer, size_t *length, loff_t *ppos)
+{
+ proc_dointvec_minmax(table, write, file, buffer, length, ppos);
+ if (write) {
+ if (sysctl_drop_caches & 1)
+ drop_pagecache();
+ if (sysctl_drop_caches & 2)
+ drop_slab();
+ }
+ return 0;
+}
diff --git a/fs/exec.c b/fs/exec.c
index e75a954..fd02ea4a 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -760,7 +760,7 @@ no_thread_group:
spin_lock(&oldsighand->siglock);
spin_lock(&newsighand->siglock);
- current->sighand = newsighand;
+ rcu_assign_pointer(current->sighand, newsighand);
recalc_sigpending();
spin_unlock(&newsighand->siglock);
@@ -768,7 +768,7 @@ no_thread_group:
write_unlock_irq(&tasklist_lock);
if (atomic_dec_and_test(&oldsighand->count))
- kmem_cache_free(sighand_cachep, oldsighand);
+ sighand_free(oldsighand);
}
BUG_ON(!thread_group_leader(current));
@@ -1462,6 +1462,7 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs)
if (!(current->signal->flags & SIGNAL_GROUP_EXIT)) {
current->signal->flags = SIGNAL_GROUP_EXIT;
current->signal->group_exit_code = exit_code;
+ current->signal->group_stop_count = 0;
retval = 0;
}
spin_unlock_irq(&current->sighand->siglock);
@@ -1477,7 +1478,6 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs)
* Clear any false indication of pending signals that might
* be seen by the filesystem code called to write the core file.
*/
- current->signal->group_stop_count = 0;
clear_thread_flag(TIF_SIGPENDING);
if (current->signal->rlim[RLIMIT_CORE].rlim_cur < binfmt->min_coredump)
@@ -1505,7 +1505,7 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs)
goto close_fail;
if (!file->f_op->write)
goto close_fail;
- if (do_truncate(file->f_dentry, 0, file) != 0)
+ if (do_truncate(file->f_dentry, 0, 0, file) != 0)
goto close_fail;
retval = binfmt->core_dump(signr, regs, file);
diff --git a/fs/ext3/ialloc.c b/fs/ext3/ialloc.c
index 9e4a243..6907807 100644
--- a/fs/ext3/ialloc.c
+++ b/fs/ext3/ialloc.c
@@ -651,7 +651,7 @@ struct inode *ext3_orphan_get(struct super_block *sb, unsigned long ino)
/* Error cases - e2fsck has already cleaned up for us */
if (ino > max_ino) {
ext3_warning(sb, __FUNCTION__,
- "bad orphan ino %lu! e2fsck was run?\n", ino);
+ "bad orphan ino %lu! e2fsck was run?", ino);
goto out;
}
@@ -660,7 +660,7 @@ struct inode *ext3_orphan_get(struct super_block *sb, unsigned long ino)
bitmap_bh = read_inode_bitmap(sb, block_group);
if (!bitmap_bh) {
ext3_warning(sb, __FUNCTION__,
- "inode bitmap error for orphan %lu\n", ino);
+ "inode bitmap error for orphan %lu", ino);
goto out;
}
@@ -672,7 +672,7 @@ struct inode *ext3_orphan_get(struct super_block *sb, unsigned long ino)
!(inode = iget(sb, ino)) || is_bad_inode(inode) ||
NEXT_ORPHAN(inode) > max_ino) {
ext3_warning(sb, __FUNCTION__,
- "bad orphan inode %lu! e2fsck was run?\n", ino);
+ "bad orphan inode %lu! e2fsck was run?", ino);
printk(KERN_NOTICE "ext3_test_bit(bit=%d, block=%llu) = %d\n",
bit, (unsigned long long)bitmap_bh->b_blocknr,
ext3_test_bit(bit, bitmap_bh->b_data));
diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
index b3c690a..af193a3 100644
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -1476,7 +1476,7 @@ static int ext3_dx_add_entry(handle_t *handle, struct dentry *dentry,
if (levels && (dx_get_count(frames->entries) ==
dx_get_limit(frames->entries))) {
ext3_warning(sb, __FUNCTION__,
- "Directory index full!\n");
+ "Directory index full!");
err = -ENOSPC;
goto cleanup;
}
diff --git a/fs/ext3/resize.c b/fs/ext3/resize.c
index 6104ad3..1041dab 100644
--- a/fs/ext3/resize.c
+++ b/fs/ext3/resize.c
@@ -31,7 +31,7 @@ static int verify_group_input(struct super_block *sb,
unsigned start = le32_to_cpu(es->s_blocks_count);
unsigned end = start + input->blocks_count;
unsigned group = input->group;
- unsigned itend = input->inode_table + EXT3_SB(sb)->s_itb_per_group;
+ unsigned itend = input->inode_table + sbi->s_itb_per_group;
unsigned overhead = ext3_bg_has_super(sb, group) ?
(1 + ext3_bg_num_gdb(sb, group) +
le16_to_cpu(es->s_reserved_gdt_blocks)) : 0;
@@ -340,7 +340,7 @@ static int verify_reserved_gdb(struct super_block *sb,
while ((grp = ext3_list_backups(sb, &three, &five, &seven)) < end) {
if (le32_to_cpu(*p++) != grp * EXT3_BLOCKS_PER_GROUP(sb) + blk){
ext3_warning(sb, __FUNCTION__,
- "reserved GDT %ld missing grp %d (%ld)\n",
+ "reserved GDT %ld missing grp %d (%ld)",
blk, grp,
grp * EXT3_BLOCKS_PER_GROUP(sb) + blk);
return -EINVAL;
@@ -393,7 +393,7 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
if (EXT3_SB(sb)->s_sbh->b_blocknr !=
le32_to_cpu(EXT3_SB(sb)->s_es->s_first_data_block)) {
ext3_warning(sb, __FUNCTION__,
- "won't resize using backup superblock at %llu\n",
+ "won't resize using backup superblock at %llu",
(unsigned long long)EXT3_SB(sb)->s_sbh->b_blocknr);
return -EPERM;
}
@@ -417,7 +417,7 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
data = (__u32 *)dind->b_data;
if (le32_to_cpu(data[gdb_num % EXT3_ADDR_PER_BLOCK(sb)]) != gdblock) {
ext3_warning(sb, __FUNCTION__,
- "new group %u GDT block %lu not reserved\n",
+ "new group %u GDT block %lu not reserved",
input->group, gdblock);
err = -EINVAL;
goto exit_dind;
@@ -540,7 +540,7 @@ static int reserve_backup_gdb(handle_t *handle, struct inode *inode,
for (res = 0; res < reserved_gdb; res++, blk++) {
if (le32_to_cpu(*data) != blk) {
ext3_warning(sb, __FUNCTION__,
- "reserved block %lu not at offset %ld\n",
+ "reserved block %lu not at offset %ld",
blk, (long)(data - (__u32 *)dind->b_data));
err = -EINVAL;
goto exit_bh;
@@ -683,7 +683,7 @@ exit_err:
if (err) {
ext3_warning(sb, __FUNCTION__,
"can't update backup for group %d (err %d), "
- "forcing fsck on next reboot\n", group, err);
+ "forcing fsck on next reboot", group, err);
sbi->s_mount_state &= ~EXT3_VALID_FS;
sbi->s_es->s_state &= ~cpu_to_le16(EXT3_VALID_FS);
mark_buffer_dirty(sbi->s_sbh);
@@ -722,7 +722,7 @@ int ext3_group_add(struct super_block *sb, struct ext3_new_group_data *input)
if (gdb_off == 0 && !EXT3_HAS_RO_COMPAT_FEATURE(sb,
EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
ext3_warning(sb, __FUNCTION__,
- "Can't resize non-sparse filesystem further\n");
+ "Can't resize non-sparse filesystem further");
return -EPERM;
}
@@ -730,13 +730,13 @@ int ext3_group_add(struct super_block *sb, struct ext3_new_group_data *input)
if (!EXT3_HAS_COMPAT_FEATURE(sb,
EXT3_FEATURE_COMPAT_RESIZE_INODE)){
ext3_warning(sb, __FUNCTION__,
- "No reserved GDT blocks, can't resize\n");
+ "No reserved GDT blocks, can't resize");
return -EPERM;
}
inode = iget(sb, EXT3_RESIZE_INO);
if (!inode || is_bad_inode(inode)) {
ext3_warning(sb, __FUNCTION__,
- "Error opening resize inode\n");
+ "Error opening resize inode");
iput(inode);
return -ENOENT;
}
@@ -764,9 +764,9 @@ int ext3_group_add(struct super_block *sb, struct ext3_new_group_data *input)
}
lock_super(sb);
- if (input->group != EXT3_SB(sb)->s_groups_count) {
+ if (input->group != sbi->s_groups_count) {
ext3_warning(sb, __FUNCTION__,
- "multiple resizers run on filesystem!\n");
+ "multiple resizers run on filesystem!");
err = -EBUSY;
goto exit_journal;
}
@@ -799,7 +799,7 @@ int ext3_group_add(struct super_block *sb, struct ext3_new_group_data *input)
* data. So we need to be careful to set all of the relevant
* group descriptor data etc. *before* we enable the group.
*
- * The key field here is EXT3_SB(sb)->s_groups_count: as long as
+ * The key field here is sbi->s_groups_count: as long as
* that retains its old value, nobody is going to access the new
* group.
*
@@ -859,7 +859,7 @@ int ext3_group_add(struct super_block *sb, struct ext3_new_group_data *input)
smp_wmb();
/* Update the global fs size fields */
- EXT3_SB(sb)->s_groups_count++;
+ sbi->s_groups_count++;
ext3_journal_dirty_metadata(handle, primary);
@@ -874,7 +874,7 @@ int ext3_group_add(struct super_block *sb, struct ext3_new_group_data *input)
percpu_counter_mod(&sbi->s_freeinodes_counter,
EXT3_INODES_PER_GROUP(sb));
- ext3_journal_dirty_metadata(handle, EXT3_SB(sb)->s_sbh);
+ ext3_journal_dirty_metadata(handle, sbi->s_sbh);
sb->s_dirt = 1;
exit_journal:
@@ -937,7 +937,7 @@ int ext3_group_extend(struct super_block *sb, struct ext3_super_block *es,
if (last == 0) {
ext3_warning(sb, __FUNCTION__,
- "need to use ext2online to resize further\n");
+ "need to use ext2online to resize further");
return -EPERM;
}
@@ -973,7 +973,7 @@ int ext3_group_extend(struct super_block *sb, struct ext3_super_block *es,
lock_super(sb);
if (o_blocks_count != le32_to_cpu(es->s_blocks_count)) {
ext3_warning(sb, __FUNCTION__,
- "multiple resizers run on filesystem!\n");
+ "multiple resizers run on filesystem!");
err = -EBUSY;
goto exit_put;
}
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 4e67306..7c45acf 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -43,7 +43,8 @@
#include "acl.h"
#include "namei.h"
-static int ext3_load_journal(struct super_block *, struct ext3_super_block *);
+static int ext3_load_journal(struct super_block *, struct ext3_super_block *,
+ unsigned long journal_devnum);
static int ext3_create_journal(struct super_block *, struct ext3_super_block *,
int);
static void ext3_commit_super (struct super_block * sb,
@@ -628,7 +629,7 @@ enum {
Opt_nouid32, Opt_nocheck, Opt_debug, Opt_oldalloc, Opt_orlov,
Opt_user_xattr, Opt_nouser_xattr, Opt_acl, Opt_noacl,
Opt_reservation, Opt_noreservation, Opt_noload, Opt_nobh,
- Opt_commit, Opt_journal_update, Opt_journal_inum,
+ Opt_commit, Opt_journal_update, Opt_journal_inum, Opt_journal_dev,
Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback,
Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota,
@@ -666,6 +667,7 @@ static match_table_t tokens = {
{Opt_commit, "commit=%u"},
{Opt_journal_update, "journal=update"},
{Opt_journal_inum, "journal=%u"},
+ {Opt_journal_dev, "journal_dev=%u"},
{Opt_abort, "abort"},
{Opt_data_journal, "data=journal"},
{Opt_data_ordered, "data=ordered"},
@@ -705,8 +707,9 @@ static unsigned long get_sb_block(void **data)
return sb_block;
}
-static int parse_options (char * options, struct super_block *sb,
- unsigned long * inum, unsigned long *n_blocks_count, int is_remount)
+static int parse_options (char *options, struct super_block *sb,
+ unsigned long *inum, unsigned long *journal_devnum,
+ unsigned long *n_blocks_count, int is_remount)
{
struct ext3_sb_info *sbi = EXT3_SB(sb);
char * p;
@@ -839,6 +842,16 @@ static int parse_options (char * options, struct super_block *sb,
return 0;
*inum = option;
break;
+ case Opt_journal_dev:
+ if (is_remount) {
+ printk(KERN_ERR "EXT3-fs: cannot specify "
+ "journal on remount\n");
+ return 0;
+ }
+ if (match_int(&args[0], &option))
+ return 0;
+ *journal_devnum = option;
+ break;
case Opt_noload:
set_opt (sbi->s_mount_opt, NOLOAD);
break;
@@ -1331,6 +1344,7 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
unsigned long logic_sb_block;
unsigned long offset = 0;
unsigned long journal_inum = 0;
+ unsigned long journal_devnum = 0;
unsigned long def_mount_opts;
struct inode *root;
int blocksize;
@@ -1411,7 +1425,8 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
set_opt(sbi->s_mount_opt, RESERVATION);
- if (!parse_options ((char *) data, sb, &journal_inum, NULL, 0))
+ if (!parse_options ((char *) data, sb, &journal_inum, &journal_devnum,
+ NULL, 0))
goto failed_mount;
sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
@@ -1622,7 +1637,7 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
*/
if (!test_opt(sb, NOLOAD) &&
EXT3_HAS_COMPAT_FEATURE(sb, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
- if (ext3_load_journal(sb, es))
+ if (ext3_load_journal(sb, es, journal_devnum))
goto failed_mount2;
} else if (journal_inum) {
if (ext3_create_journal(sb, es, journal_inum))
@@ -1902,15 +1917,24 @@ out_bdev:
return NULL;
}
-static int ext3_load_journal(struct super_block * sb,
- struct ext3_super_block * es)
+static int ext3_load_journal(struct super_block *sb,
+ struct ext3_super_block *es,
+ unsigned long journal_devnum)
{
journal_t *journal;
int journal_inum = le32_to_cpu(es->s_journal_inum);
- dev_t journal_dev = new_decode_dev(le32_to_cpu(es->s_journal_dev));
+ dev_t journal_dev;
int err = 0;
int really_read_only;
+ if (journal_devnum &&
+ journal_devnum != le32_to_cpu(es->s_journal_dev)) {
+ printk(KERN_INFO "EXT3-fs: external journal device major/minor "
+ "numbers have changed\n");
+ journal_dev = new_decode_dev(journal_devnum);
+ } else
+ journal_dev = new_decode_dev(le32_to_cpu(es->s_journal_dev));
+
really_read_only = bdev_read_only(sb->s_bdev);
/*
@@ -1969,6 +1993,16 @@ static int ext3_load_journal(struct super_block * sb,
EXT3_SB(sb)->s_journal = journal;
ext3_clear_journal_err(sb, es);
+
+ if (journal_devnum &&
+ journal_devnum != le32_to_cpu(es->s_journal_dev)) {
+ es->s_journal_dev = cpu_to_le32(journal_devnum);
+ sb->s_dirt = 1;
+
+ /* Make sure we flush the recovery flag to disk. */
+ ext3_commit_super(sb, es, 1);
+ }
+
return 0;
}
@@ -2197,7 +2231,7 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data)
/*
* Allow the "check" option to be passed as a remount option.
*/
- if (!parse_options(data, sb, NULL, &n_blocks_count, 1)) {
+ if (!parse_options(data, sb, NULL, NULL, &n_blocks_count, 1)) {
err = -EINVAL;
goto restore_opts;
}
diff --git a/fs/fat/cache.c b/fs/fat/cache.c
index 77c24fc..1acc941 100644
--- a/fs/fat/cache.c
+++ b/fs/fat/cache.c
@@ -295,7 +295,8 @@ static int fat_bmap_cluster(struct inode *inode, int cluster)
return dclus;
}
-int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys)
+int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys,
+ unsigned long *mapped_blocks)
{
struct super_block *sb = inode->i_sb;
struct msdos_sb_info *sbi = MSDOS_SB(sb);
@@ -303,9 +304,12 @@ int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys)
int cluster, offset;
*phys = 0;
+ *mapped_blocks = 0;
if ((sbi->fat_bits != 32) && (inode->i_ino == MSDOS_ROOT_INO)) {
- if (sector < (sbi->dir_entries >> sbi->dir_per_block_bits))
+ if (sector < (sbi->dir_entries >> sbi->dir_per_block_bits)) {
*phys = sector + sbi->dir_start;
+ *mapped_blocks = 1;
+ }
return 0;
}
last_block = (MSDOS_I(inode)->mmu_private + (sb->s_blocksize - 1))
@@ -318,7 +322,11 @@ int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys)
cluster = fat_bmap_cluster(inode, cluster);
if (cluster < 0)
return cluster;
- else if (cluster)
+ else if (cluster) {
*phys = fat_clus_to_blknr(sbi, cluster) + offset;
+ *mapped_blocks = sbi->sec_per_clus - offset;
+ if (*mapped_blocks > last_block - sector)
+ *mapped_blocks = last_block - sector;
+ }
return 0;
}
diff --git a/fs/fat/dir.c b/fs/fat/dir.c
index ba82496..eef1b81 100644
--- a/fs/fat/dir.c
+++ b/fs/fat/dir.c
@@ -45,8 +45,8 @@ static inline void fat_dir_readahead(struct inode *dir, sector_t iblock,
if ((sbi->fat_bits != 32) && (dir->i_ino == MSDOS_ROOT_INO))
return;
- bh = sb_getblk(sb, phys);
- if (bh && !buffer_uptodate(bh)) {
+ bh = sb_find_get_block(sb, phys);
+ if (bh == NULL || !buffer_uptodate(bh)) {
for (sec = 0; sec < sbi->sec_per_clus; sec++)
sb_breadahead(sb, phys + sec);
}
@@ -68,8 +68,8 @@ static int fat__get_entry(struct inode *dir, loff_t *pos,
{
struct super_block *sb = dir->i_sb;
sector_t phys, iblock;
- int offset;
- int err;
+ unsigned long mapped_blocks;
+ int err, offset;
next:
if (*bh)
@@ -77,7 +77,7 @@ next:
*bh = NULL;
iblock = *pos >> sb->s_blocksize_bits;
- err = fat_bmap(dir, iblock, &phys);
+ err = fat_bmap(dir, iblock, &phys, &mapped_blocks);
if (err || !phys)
return -1; /* beyond EOF or error */
@@ -418,7 +418,7 @@ EODir:
return err;
}
-EXPORT_SYMBOL(fat_search_long);
+EXPORT_SYMBOL_GPL(fat_search_long);
struct fat_ioctl_filldir_callback {
struct dirent __user *dirent;
@@ -780,7 +780,7 @@ int fat_get_dotdot_entry(struct inode *dir, struct buffer_head **bh,
return -ENOENT;
}
-EXPORT_SYMBOL(fat_get_dotdot_entry);
+EXPORT_SYMBOL_GPL(fat_get_dotdot_entry);
/* See if directory is empty */
int fat_dir_empty(struct inode *dir)
@@ -803,7 +803,7 @@ int fat_dir_empty(struct inode *dir)
return result;
}
-EXPORT_SYMBOL(fat_dir_empty);
+EXPORT_SYMBOL_GPL(fat_dir_empty);
/*
* fat_subdirs counts the number of sub-directories of dir. It can be run
@@ -849,7 +849,7 @@ int fat_scan(struct inode *dir, const unsigned char *name,
return -ENOENT;
}
-EXPORT_SYMBOL(fat_scan);
+EXPORT_SYMBOL_GPL(fat_scan);
static int __fat_remove_entries(struct inode *dir, loff_t pos, int nr_slots)
{
@@ -936,7 +936,7 @@ int fat_remove_entries(struct inode *dir, struct fat_slot_info *sinfo)
return 0;
}
-EXPORT_SYMBOL(fat_remove_entries);
+EXPORT_SYMBOL_GPL(fat_remove_entries);
static int fat_zeroed_cluster(struct inode *dir, sector_t blknr, int nr_used,
struct buffer_head **bhs, int nr_bhs)
@@ -1048,7 +1048,7 @@ error:
return err;
}
-EXPORT_SYMBOL(fat_alloc_new_dir);
+EXPORT_SYMBOL_GPL(fat_alloc_new_dir);
static int fat_add_new_entries(struct inode *dir, void *slots, int nr_slots,
int *nr_cluster, struct msdos_dir_entry **de,
@@ -1264,4 +1264,4 @@ error_remove:
return err;
}
-EXPORT_SYMBOL(fat_add_entries);
+EXPORT_SYMBOL_GPL(fat_add_entries);
diff --git a/fs/fat/fatent.c b/fs/fat/fatent.c
index 4164cd5..a1a9e04 100644
--- a/fs/fat/fatent.c
+++ b/fs/fat/fatent.c
@@ -476,6 +476,7 @@ int fat_alloc_clusters(struct inode *inode, int *cluster, int nr_cluster)
sbi->prev_free = entry;
if (sbi->free_clusters != -1)
sbi->free_clusters--;
+ sb->s_dirt = 1;
cluster[idx_clus] = entry;
idx_clus++;
@@ -496,6 +497,7 @@ int fat_alloc_clusters(struct inode *inode, int *cluster, int nr_cluster)
/* Couldn't allocate the free entries */
sbi->free_clusters = 0;
+ sb->s_dirt = 1;
err = -ENOSPC;
out:
@@ -509,7 +511,6 @@ out:
}
for (i = 0; i < nr_bhs; i++)
brelse(bhs[i]);
- fat_clusters_flush(sb);
if (err && idx_clus)
fat_free_clusters(inode, cluster[0]);
@@ -542,8 +543,10 @@ int fat_free_clusters(struct inode *inode, int cluster)
}
ops->ent_put(&fatent, FAT_ENT_FREE);
- if (sbi->free_clusters != -1)
+ if (sbi->free_clusters != -1) {
sbi->free_clusters++;
+ sb->s_dirt = 1;
+ }
if (nr_bhs + fatent.nr_bhs > MAX_BUF_PER_PAGE) {
if (sb->s_flags & MS_SYNCHRONOUS) {
@@ -578,7 +581,7 @@ error:
return err;
}
-EXPORT_SYMBOL(fat_free_clusters);
+EXPORT_SYMBOL_GPL(fat_free_clusters);
int fat_count_free_clusters(struct super_block *sb)
{
@@ -605,6 +608,7 @@ int fat_count_free_clusters(struct super_block *sb)
} while (fat_ent_next(sbi, &fatent));
}
sbi->free_clusters = free;
+ sb->s_dirt = 1;
fatent_brelse(&fatent);
out:
unlock_fat(sbi);
diff --git a/fs/fat/file.c b/fs/fat/file.c
index 7134403..9b07c32 100644
--- a/fs/fat/file.c
+++ b/fs/fat/file.c
@@ -11,6 +11,7 @@
#include <linux/msdos_fs.h>
#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
+#include <linux/writeback.h>
int fat_generic_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
@@ -124,6 +125,24 @@ struct file_operations fat_file_operations = {
.sendfile = generic_file_sendfile,
};
+static int fat_cont_expand(struct inode *inode, loff_t size)
+{
+ struct address_space *mapping = inode->i_mapping;
+ loff_t start = inode->i_size, count = size - inode->i_size;
+ int err;
+
+ err = generic_cont_expand_simple(inode, size);
+ if (err)
+ goto out;
+
+ inode->i_ctime = inode->i_mtime = CURRENT_TIME_SEC;
+ mark_inode_dirty(inode);
+ if (IS_SYNC(inode))
+ err = sync_page_range_nolock(inode, mapping, start, count);
+out:
+ return err;
+}
+
int fat_notify_change(struct dentry *dentry, struct iattr *attr)
{
struct msdos_sb_info *sbi = MSDOS_SB(dentry->d_sb);
@@ -132,11 +151,17 @@ int fat_notify_change(struct dentry *dentry, struct iattr *attr)
lock_kernel();
- /* FAT cannot truncate to a longer file */
+ /*
+ * Expand the file. Since inode_setattr() updates ->i_size
+ * before calling the ->truncate(), but FAT needs to fill the
+ * hole before it.
+ */
if (attr->ia_valid & ATTR_SIZE) {
if (attr->ia_size > inode->i_size) {
- error = -EPERM;
- goto out;
+ error = fat_cont_expand(inode, attr->ia_size);
+ if (error || attr->ia_valid == ATTR_SIZE)
+ goto out;
+ attr->ia_valid &= ~ATTR_SIZE;
}
}
@@ -173,7 +198,7 @@ out:
return error;
}
-EXPORT_SYMBOL(fat_notify_change);
+EXPORT_SYMBOL_GPL(fat_notify_change);
/* Free all clusters after the skip'th cluster. */
static int fat_free(struct inode *inode, int skip)
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index a0f9b9f..e7f4aa7 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -18,10 +18,12 @@
#include <linux/seq_file.h>
#include <linux/msdos_fs.h>
#include <linux/pagemap.h>
+#include <linux/mpage.h>
#include <linux/buffer_head.h>
#include <linux/mount.h>
#include <linux/vfs.h>
#include <linux/parser.h>
+#include <linux/uio.h>
#include <asm/unaligned.h>
#ifndef CONFIG_FAT_DEFAULT_IOCHARSET
@@ -48,51 +50,97 @@ static int fat_add_cluster(struct inode *inode)
return err;
}
-static int fat_get_block(struct inode *inode, sector_t iblock,
- struct buffer_head *bh_result, int create)
+static int __fat_get_blocks(struct inode *inode, sector_t iblock,
+ unsigned long *max_blocks,
+ struct buffer_head *bh_result, int create)
{
struct super_block *sb = inode->i_sb;
+ struct msdos_sb_info *sbi = MSDOS_SB(sb);
sector_t phys;
- int err;
+ unsigned long mapped_blocks;
+ int err, offset;
- err = fat_bmap(inode, iblock, &phys);
+ err = fat_bmap(inode, iblock, &phys, &mapped_blocks);
if (err)
return err;
if (phys) {
map_bh(bh_result, sb, phys);
+ *max_blocks = min(mapped_blocks, *max_blocks);
return 0;
}
if (!create)
return 0;
+
if (iblock != MSDOS_I(inode)->mmu_private >> sb->s_blocksize_bits) {
fat_fs_panic(sb, "corrupted file size (i_pos %lld, %lld)",
MSDOS_I(inode)->i_pos, MSDOS_I(inode)->mmu_private);
return -EIO;
}
- if (!((unsigned long)iblock & (MSDOS_SB(sb)->sec_per_clus - 1))) {
+
+ offset = (unsigned long)iblock & (sbi->sec_per_clus - 1);
+ if (!offset) {
+ /* TODO: multiple cluster allocation would be desirable. */
err = fat_add_cluster(inode);
if (err)
return err;
}
- MSDOS_I(inode)->mmu_private += sb->s_blocksize;
- err = fat_bmap(inode, iblock, &phys);
+ /* available blocks on this cluster */
+ mapped_blocks = sbi->sec_per_clus - offset;
+
+ *max_blocks = min(mapped_blocks, *max_blocks);
+ MSDOS_I(inode)->mmu_private += *max_blocks << sb->s_blocksize_bits;
+
+ err = fat_bmap(inode, iblock, &phys, &mapped_blocks);
if (err)
return err;
- if (!phys)
- BUG();
+ BUG_ON(!phys);
+ BUG_ON(*max_blocks != mapped_blocks);
set_buffer_new(bh_result);
map_bh(bh_result, sb, phys);
return 0;
}
+static int fat_get_blocks(struct inode *inode, sector_t iblock,
+ unsigned long max_blocks,
+ struct buffer_head *bh_result, int create)
+{
+ struct super_block *sb = inode->i_sb;
+ int err;
+
+ err = __fat_get_blocks(inode, iblock, &max_blocks, bh_result, create);
+ if (err)
+ return err;
+ bh_result->b_size = max_blocks << sb->s_blocksize_bits;
+ return 0;
+}
+
+static int fat_get_block(struct inode *inode, sector_t iblock,
+ struct buffer_head *bh_result, int create)
+{
+ unsigned long max_blocks = 1;
+ return __fat_get_blocks(inode, iblock, &max_blocks, bh_result, create);
+}
+
static int fat_writepage(struct page *page, struct writeback_control *wbc)
{
return block_write_full_page(page, fat_get_block, wbc);
}
+static int fat_writepages(struct address_space *mapping,
+ struct writeback_control *wbc)
+{
+ return mpage_writepages(mapping, wbc, fat_get_block);
+}
+
static int fat_readpage(struct file *file, struct page *page)
{
- return block_read_full_page(page, fat_get_block);
+ return mpage_readpage(page, fat_get_block);
+}
+
+static int fat_readpages(struct file *file, struct address_space *mapping,
+ struct list_head *pages, unsigned nr_pages)
+{
+ return mpage_readpages(mapping, pages, nr_pages, fat_get_block);
}
static int fat_prepare_write(struct file *file, struct page *page,
@@ -115,6 +163,34 @@ static int fat_commit_write(struct file *file, struct page *page,
return err;
}
+static ssize_t fat_direct_IO(int rw, struct kiocb *iocb,
+ const struct iovec *iov,
+ loff_t offset, unsigned long nr_segs)
+{
+ struct file *file = iocb->ki_filp;
+ struct inode *inode = file->f_mapping->host;
+
+ if (rw == WRITE) {
+ /*
+ * FIXME: blockdev_direct_IO() doesn't use ->prepare_write(),
+ * so we need to update the ->mmu_private to block boundary.
+ *
+ * But we must fill the remaining area or hole by nul for
+ * updating ->mmu_private.
+ */
+ loff_t size = offset + iov_length(iov, nr_segs);
+ if (MSDOS_I(inode)->mmu_private < size)
+ return -EINVAL;
+ }
+
+ /*
+ * FAT need to use the DIO_LOCKING for avoiding the race
+ * condition of fat_get_block() and ->truncate().
+ */
+ return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
+ offset, nr_segs, fat_get_blocks, NULL);
+}
+
static sector_t _fat_bmap(struct address_space *mapping, sector_t block)
{
return generic_block_bmap(mapping, block, fat_get_block);
@@ -122,10 +198,13 @@ static sector_t _fat_bmap(struct address_space *mapping, sector_t block)
static struct address_space_operations fat_aops = {
.readpage = fat_readpage,
+ .readpages = fat_readpages,
.writepage = fat_writepage,
+ .writepages = fat_writepages,
.sync_page = block_sync_page,
.prepare_write = fat_prepare_write,
.commit_write = fat_commit_write,
+ .direct_IO = fat_direct_IO,
.bmap = _fat_bmap
};
@@ -182,7 +261,7 @@ void fat_attach(struct inode *inode, loff_t i_pos)
spin_unlock(&sbi->inode_hash_lock);
}
-EXPORT_SYMBOL(fat_attach);
+EXPORT_SYMBOL_GPL(fat_attach);
void fat_detach(struct inode *inode)
{
@@ -193,7 +272,7 @@ void fat_detach(struct inode *inode)
spin_unlock(&sbi->inode_hash_lock);
}
-EXPORT_SYMBOL(fat_detach);
+EXPORT_SYMBOL_GPL(fat_detach);
struct inode *fat_iget(struct super_block *sb, loff_t i_pos)
{
@@ -347,7 +426,7 @@ out:
return inode;
}
-EXPORT_SYMBOL(fat_build_inode);
+EXPORT_SYMBOL_GPL(fat_build_inode);
static void fat_delete_inode(struct inode *inode)
{
@@ -374,12 +453,17 @@ static void fat_clear_inode(struct inode *inode)
unlock_kernel();
}
-static void fat_put_super(struct super_block *sb)
+static void fat_write_super(struct super_block *sb)
{
- struct msdos_sb_info *sbi = MSDOS_SB(sb);
+ sb->s_dirt = 0;
if (!(sb->s_flags & MS_RDONLY))
fat_clusters_flush(sb);
+}
+
+static void fat_put_super(struct super_block *sb)
+{
+ struct msdos_sb_info *sbi = MSDOS_SB(sb);
if (sbi->nls_disk) {
unload_nls(sbi->nls_disk);
@@ -537,7 +621,7 @@ int fat_sync_inode(struct inode *inode)
return fat_write_inode(inode, 1);
}
-EXPORT_SYMBOL(fat_sync_inode);
+EXPORT_SYMBOL_GPL(fat_sync_inode);
static int fat_show_options(struct seq_file *m, struct vfsmount *mnt);
static struct super_operations fat_sops = {
@@ -546,6 +630,7 @@ static struct super_operations fat_sops = {
.write_inode = fat_write_inode,
.delete_inode = fat_delete_inode,
.put_super = fat_put_super,
+ .write_super = fat_write_super,
.statfs = fat_statfs,
.clear_inode = fat_clear_inode,
.remount_fs = fat_remount,
@@ -1347,7 +1432,7 @@ out_fail:
return error;
}
-EXPORT_SYMBOL(fat_fill_super);
+EXPORT_SYMBOL_GPL(fat_fill_super);
int __init fat_cache_init(void);
void fat_cache_destroy(void);
diff --git a/fs/fat/misc.c b/fs/fat/misc.c
index 2a0df21..32fb0a3 100644
--- a/fs/fat/misc.c
+++ b/fs/fat/misc.c
@@ -33,7 +33,7 @@ void fat_fs_panic(struct super_block *s, const char *fmt, ...)
}
}
-EXPORT_SYMBOL(fat_fs_panic);
+EXPORT_SYMBOL_GPL(fat_fs_panic);
/* Flushes the number of free clusters on FAT32 */
/* XXX: Need to write one per FSINFO block. Currently only writes 1 */
@@ -67,8 +67,6 @@ void fat_clusters_flush(struct super_block *sb)
if (sbi->prev_free != -1)
fsinfo->next_cluster = cpu_to_le32(sbi->prev_free);
mark_buffer_dirty(bh);
- if (sb->s_flags & MS_SYNCHRONOUS)
- sync_dirty_buffer(bh);
}
brelse(bh);
}
@@ -194,7 +192,7 @@ void fat_date_unix2dos(int unix_date, __le16 *time, __le16 *date)
*date = cpu_to_le16(nl_day-day_n[month-1]+1+(month << 5)+(year << 9));
}
-EXPORT_SYMBOL(fat_date_unix2dos);
+EXPORT_SYMBOL_GPL(fat_date_unix2dos);
int fat_sync_bhs(struct buffer_head **bhs, int nr_bhs)
{
@@ -222,4 +220,4 @@ int fat_sync_bhs(struct buffer_head **bhs, int nr_bhs)
return err;
}
-EXPORT_SYMBOL(fat_sync_bhs);
+EXPORT_SYMBOL_GPL(fat_sync_bhs);
diff --git a/fs/fcntl.c b/fs/fcntl.c
index 863b46e..9903bde 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -457,11 +457,11 @@ static void send_sigio_to_task(struct task_struct *p,
else
si.si_band = band_table[reason - POLL_IN];
si.si_fd = fd;
- if (!send_group_sig_info(fown->signum, &si, p))
+ if (!group_send_sig_info(fown->signum, &si, p))
break;
/* fall-through: fall back on the old plain SIGIO signal */
case 0:
- send_group_sig_info(SIGIO, SEND_SIG_PRIV, p);
+ group_send_sig_info(SIGIO, SEND_SIG_PRIV, p);
}
}
@@ -495,7 +495,7 @@ static void send_sigurg_to_task(struct task_struct *p,
struct fown_struct *fown)
{
if (sigio_perm(p, fown, SIGURG))
- send_group_sig_info(SIGURG, SEND_SIG_PRIV, p);
+ group_send_sig_info(SIGURG, SEND_SIG_PRIV, p);
}
int send_sigurg(struct fown_struct *fown)
diff --git a/fs/file_table.c b/fs/file_table.c
index c3a5e2f..6142250 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -117,7 +117,7 @@ EXPORT_SYMBOL(get_empty_filp);
void fastcall fput(struct file *file)
{
- if (rcuref_dec_and_test(&file->f_count))
+ if (atomic_dec_and_test(&file->f_count))
__fput(file);
}
@@ -166,7 +166,7 @@ struct file fastcall *fget(unsigned int fd)
rcu_read_lock();
file = fcheck_files(files, fd);
if (file) {
- if (!rcuref_inc_lf(&file->f_count)) {
+ if (!atomic_inc_not_zero(&file->f_count)) {
/* File object ref couldn't be taken */
rcu_read_unlock();
return NULL;
@@ -198,7 +198,7 @@ struct file fastcall *fget_light(unsigned int fd, int *fput_needed)
rcu_read_lock();
file = fcheck_files(files, fd);
if (file) {
- if (rcuref_inc_lf(&file->f_count))
+ if (atomic_inc_not_zero(&file->f_count))
*fput_needed = 1;
else
/* Didn't get the reference, someone's freed */
@@ -213,7 +213,7 @@ struct file fastcall *fget_light(unsigned int fd, int *fput_needed)
void put_filp(struct file *file)
{
- if (rcuref_dec_and_test(&file->f_count)) {
+ if (atomic_dec_and_test(&file->f_count)) {
security_file_free(file);
file_kill(file);
file_free(file);
diff --git a/fs/freevxfs/vxfs_immed.c b/fs/freevxfs/vxfs_immed.c
index d0401dc6..6f5df17 100644
--- a/fs/freevxfs/vxfs_immed.c
+++ b/fs/freevxfs/vxfs_immed.c
@@ -99,8 +99,8 @@ static int
vxfs_immed_readpage(struct file *fp, struct page *pp)
{
struct vxfs_inode_info *vip = VXFS_INO(pp->mapping->host);
- u_int64_t offset = pp->index << PAGE_CACHE_SHIFT;
- caddr_t kaddr;
+ u_int64_t offset = (u_int64_t)pp->index << PAGE_CACHE_SHIFT;
+ caddr_t kaddr;
kaddr = kmap(pp);
memcpy(kaddr, vip->vii_immed.vi_immed + offset, PAGE_CACHE_SIZE);
diff --git a/fs/inode.c b/fs/inode.c
index d8d04bd..fd568ca 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -770,7 +770,7 @@ EXPORT_SYMBOL(igrab);
*
* Note, @test is called with the inode_lock held, so can't sleep.
*/
-static inline struct inode *ifind(struct super_block *sb,
+static struct inode *ifind(struct super_block *sb,
struct hlist_head *head, int (*test)(struct inode *, void *),
void *data, const int wait)
{
@@ -804,7 +804,7 @@ static inline struct inode *ifind(struct super_block *sb,
*
* Otherwise NULL is returned.
*/
-static inline struct inode *ifind_fast(struct super_block *sb,
+static struct inode *ifind_fast(struct super_block *sb,
struct hlist_head *head, unsigned long ino)
{
struct inode *inode;
diff --git a/fs/jffs/inode-v23.c b/fs/jffs/inode-v23.c
index 3dcc6d2..2559ee1 100644
--- a/fs/jffs/inode-v23.c
+++ b/fs/jffs/inode-v23.c
@@ -757,7 +757,7 @@ jffs_do_readpage_nolock(struct file *file, struct page *page)
read_len = 0;
result = 0;
- offset = page->index << PAGE_CACHE_SHIFT;
+ offset = page_offset(page);
kmap(page);
buf = page_address(page);
@@ -1545,7 +1545,7 @@ jffs_commit_write(struct file *filp, struct page *page,
{
void *addr = page_address(page) + from;
/* XXX: PAGE_CACHE_SHIFT or PAGE_SHIFT */
- loff_t pos = (page->index<<PAGE_CACHE_SHIFT) + from;
+ loff_t pos = page_offset(page) + from;
return jffs_file_write(filp, addr, to-from, &pos);
} /* jffs_commit_write() */
diff --git a/fs/jfs/jfs_dmap.c b/fs/jfs/jfs_dmap.c
index 68000a5..2967b73 100644
--- a/fs/jfs/jfs_dmap.c
+++ b/fs/jfs/jfs_dmap.c
@@ -302,8 +302,7 @@ int dbSync(struct inode *ipbmap)
/*
* write out dirty pages of bmap
*/
- filemap_fdatawrite(ipbmap->i_mapping);
- filemap_fdatawait(ipbmap->i_mapping);
+ filemap_write_and_wait(ipbmap->i_mapping);
diWriteSpecial(ipbmap, 0);
diff --git a/fs/jfs/jfs_imap.c b/fs/jfs/jfs_imap.c
index 28201b1..31b4aa1 100644
--- a/fs/jfs/jfs_imap.c
+++ b/fs/jfs/jfs_imap.c
@@ -265,8 +265,7 @@ int diSync(struct inode *ipimap)
/*
* write out dirty pages of imap
*/
- filemap_fdatawrite(ipimap->i_mapping);
- filemap_fdatawait(ipimap->i_mapping);
+ filemap_write_and_wait(ipimap->i_mapping);
diWriteSpecial(ipimap, 0);
@@ -565,8 +564,7 @@ void diFreeSpecial(struct inode *ip)
jfs_err("diFreeSpecial called with NULL ip!");
return;
}
- filemap_fdatawrite(ip->i_mapping);
- filemap_fdatawait(ip->i_mapping);
+ filemap_write_and_wait(ip->i_mapping);
truncate_inode_pages(ip->i_mapping, 0);
iput(ip);
}
diff --git a/fs/jfs/jfs_txnmgr.c b/fs/jfs/jfs_txnmgr.c
index b660c93..2ddb6b8 100644
--- a/fs/jfs/jfs_txnmgr.c
+++ b/fs/jfs/jfs_txnmgr.c
@@ -1231,10 +1231,8 @@ int txCommit(tid_t tid, /* transaction identifier */
* when we don't need to worry about it at all.
*
* if ((!S_ISDIR(ip->i_mode))
- * && (tblk->flag & COMMIT_DELETE) == 0) {
- * filemap_fdatawrite(ip->i_mapping);
- * filemap_fdatawait(ip->i_mapping);
- * }
+ * && (tblk->flag & COMMIT_DELETE) == 0)
+ * filemap_write_and_wait(ip->i_mapping);
*/
/*
diff --git a/fs/jfs/jfs_umount.c b/fs/jfs/jfs_umount.c
index 5cf9178..21eaf7a 100644
--- a/fs/jfs/jfs_umount.c
+++ b/fs/jfs/jfs_umount.c
@@ -108,8 +108,7 @@ int jfs_umount(struct super_block *sb)
* Make sure all metadata makes it to disk before we mark
* the superblock as clean
*/
- filemap_fdatawrite(sbi->direct_inode->i_mapping);
- filemap_fdatawait(sbi->direct_inode->i_mapping);
+ filemap_write_and_wait(sbi->direct_inode->i_mapping);
/*
* ensure all file system file pages are propagated to their
@@ -161,8 +160,7 @@ int jfs_umount_rw(struct super_block *sb)
* mark the superblock clean before everything is flushed to
* disk.
*/
- filemap_fdatawrite(sbi->direct_inode->i_mapping);
- filemap_fdatawait(sbi->direct_inode->i_mapping);
+ filemap_write_and_wait(sbi->direct_inode->i_mapping);
updateSuper(sb, FM_CLEAN);
diff --git a/fs/jfs/resize.c b/fs/jfs/resize.c
index c6dc254..4518036 100644
--- a/fs/jfs/resize.c
+++ b/fs/jfs/resize.c
@@ -376,8 +376,7 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
* by txCommit();
*/
filemap_fdatawait(ipbmap->i_mapping);
- filemap_fdatawrite(ipbmap->i_mapping);
- filemap_fdatawait(ipbmap->i_mapping);
+ filemap_write_and_wait(ipbmap->i_mapping);
diWriteSpecial(ipbmap, 0);
newPage = nPages; /* first new page number */
diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index 4226af3..8d31f13 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -502,8 +502,7 @@ out_no_rw:
jfs_err("jfs_umount failed with return code %d", rc);
}
out_mount_failed:
- filemap_fdatawrite(sbi->direct_inode->i_mapping);
- filemap_fdatawait(sbi->direct_inode->i_mapping);
+ filemap_write_and_wait(sbi->direct_inode->i_mapping);
truncate_inode_pages(sbi->direct_inode->i_mapping, 0);
make_bad_inode(sbi->direct_inode);
iput(sbi->direct_inode);
diff --git a/fs/libfs.c b/fs/libfs.c
index 58101df..9c50523 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -93,16 +93,16 @@ loff_t dcache_dir_lseek(struct file *file, loff_t offset, int origin)
loff_t n = file->f_pos - 2;
spin_lock(&dcache_lock);
- list_del(&cursor->d_child);
+ list_del(&cursor->d_u.d_child);
p = file->f_dentry->d_subdirs.next;
while (n && p != &file->f_dentry->d_subdirs) {
struct dentry *next;
- next = list_entry(p, struct dentry, d_child);
+ next = list_entry(p, struct dentry, d_u.d_child);
if (!d_unhashed(next) && next->d_inode)
n--;
p = p->next;
}
- list_add_tail(&cursor->d_child, p);
+ list_add_tail(&cursor->d_u.d_child, p);
spin_unlock(&dcache_lock);
}
}
@@ -126,7 +126,7 @@ int dcache_readdir(struct file * filp, void * dirent, filldir_t filldir)
{
struct dentry *dentry = filp->f_dentry;
struct dentry *cursor = filp->private_data;
- struct list_head *p, *q = &cursor->d_child;
+ struct list_head *p, *q = &cursor->d_u.d_child;
ino_t ino;
int i = filp->f_pos;
@@ -153,7 +153,7 @@ int dcache_readdir(struct file * filp, void * dirent, filldir_t filldir)
}
for (p=q->next; p != &dentry->d_subdirs; p=p->next) {
struct dentry *next;
- next = list_entry(p, struct dentry, d_child);
+ next = list_entry(p, struct dentry, d_u.d_child);
if (d_unhashed(next) || !next->d_inode)
continue;
@@ -261,7 +261,7 @@ int simple_empty(struct dentry *dentry)
int ret = 0;
spin_lock(&dcache_lock);
- list_for_each_entry(child, &dentry->d_subdirs, d_child)
+ list_for_each_entry(child, &dentry->d_subdirs, d_u.d_child)
if (simple_positive(child))
goto out;
ret = 1;
diff --git a/fs/locks.c b/fs/locks.c
index fb32d62..909eab8 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -154,7 +154,7 @@ static struct file_lock *locks_alloc_lock(void)
}
/* Free a lock which is not in use. */
-static inline void locks_free_lock(struct file_lock *fl)
+static void locks_free_lock(struct file_lock *fl)
{
if (fl == NULL) {
BUG();
@@ -475,8 +475,7 @@ static inline int locks_overlap(struct file_lock *fl1, struct file_lock *fl2)
/*
* Check whether two locks have the same owner.
*/
-static inline int
-posix_same_owner(struct file_lock *fl1, struct file_lock *fl2)
+static int posix_same_owner(struct file_lock *fl1, struct file_lock *fl2)
{
if (fl1->fl_lmops && fl1->fl_lmops->fl_compare_owner)
return fl2->fl_lmops == fl1->fl_lmops &&
@@ -487,7 +486,7 @@ posix_same_owner(struct file_lock *fl1, struct file_lock *fl2)
/* Remove waiter from blocker's block list.
* When blocker ends up pointing to itself then the list is empty.
*/
-static inline void __locks_delete_block(struct file_lock *waiter)
+static void __locks_delete_block(struct file_lock *waiter)
{
list_del_init(&waiter->fl_block);
list_del_init(&waiter->fl_link);
diff --git a/fs/mpage.c b/fs/mpage.c
index f1d2d02..e431cb3 100644
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -184,7 +184,7 @@ do_mpage_readpage(struct bio *bio, struct page *page, unsigned nr_pages,
if (page_has_buffers(page))
goto confused;
- block_in_file = page->index << (PAGE_CACHE_SHIFT - blkbits);
+ block_in_file = (sector_t)page->index << (PAGE_CACHE_SHIFT - blkbits);
last_block = (i_size_read(inode) + blocksize - 1) >> blkbits;
bh.b_page = page;
@@ -466,7 +466,7 @@ __mpage_writepage(struct bio *bio, struct page *page, get_block_t get_block,
* The page has no buffers: map it to disk
*/
BUG_ON(!PageUptodate(page));
- block_in_file = page->index << (PAGE_CACHE_SHIFT - blkbits);
+ block_in_file = (sector_t)page->index << (PAGE_CACHE_SHIFT - blkbits);
last_block = (i_size - 1) >> blkbits;
map_bh.b_page = page;
for (page_block = 0; page_block < blocks_per_page; ) {
diff --git a/fs/namei.c b/fs/namei.c
index 6dbbd42..300eae0 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1491,7 +1491,7 @@ int may_open(struct nameidata *nd, int acc_mode, int flag)
if (!error) {
DQUOT_INIT(inode);
- error = do_truncate(dentry, 0, NULL);
+ error = do_truncate(dentry, 0, ATTR_MTIME|ATTR_CTIME, NULL);
}
put_write_access(inode);
if (error)
diff --git a/fs/namespace.c b/fs/namespace.c
index 2019899f..3e8fb61 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -451,7 +451,7 @@ EXPORT_SYMBOL(may_umount);
void release_mounts(struct list_head *head)
{
struct vfsmount *mnt;
- while(!list_empty(head)) {
+ while (!list_empty(head)) {
mnt = list_entry(head->next, struct vfsmount, mnt_hash);
list_del_init(&mnt->mnt_hash);
if (mnt->mnt_parent != mnt) {
@@ -1526,6 +1526,10 @@ static void chroot_fs_refs(struct nameidata *old_nd, struct nameidata *new_nd)
* pointed to by put_old must yield the same directory as new_root. No other
* file system may be mounted on put_old. After all, new_root is a mountpoint.
*
+ * Also, the current root cannot be on the 'rootfs' (initial ramfs) filesystem.
+ * See Documentation/filesystems/ramfs-rootfs-initramfs.txt for alternatives
+ * in this situation.
+ *
* Notes:
* - we don't move root/cwd if they are not at the root (reason: if something
* cared enough to change them, it's probably wrong to force them elsewhere)
diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c
index a9f7a8a..cfd76f4 100644
--- a/fs/ncpfs/dir.c
+++ b/fs/ncpfs/dir.c
@@ -365,7 +365,7 @@ ncp_dget_fpos(struct dentry *dentry, struct dentry *parent, unsigned long fpos)
spin_lock(&dcache_lock);
next = parent->d_subdirs.next;
while (next != &parent->d_subdirs) {
- dent = list_entry(next, struct dentry, d_child);
+ dent = list_entry(next, struct dentry, d_u.d_child);
if ((unsigned long)dent->d_fsdata == fpos) {
if (dent->d_inode)
dget_locked(dent);
diff --git a/fs/ncpfs/ncplib_kernel.h b/fs/ncpfs/ncplib_kernel.h
index 9e4dc30..799e5c2 100644
--- a/fs/ncpfs/ncplib_kernel.h
+++ b/fs/ncpfs/ncplib_kernel.h
@@ -196,7 +196,7 @@ ncp_renew_dentries(struct dentry *parent)
spin_lock(&dcache_lock);
next = parent->d_subdirs.next;
while (next != &parent->d_subdirs) {
- dentry = list_entry(next, struct dentry, d_child);
+ dentry = list_entry(next, struct dentry, d_u.d_child);
if (dentry->d_fsdata == NULL)
ncp_age_dentry(server, dentry);
@@ -218,7 +218,7 @@ ncp_invalidate_dircache_entries(struct dentry *parent)
spin_lock(&dcache_lock);
next = parent->d_subdirs.next;
while (next != &parent->d_subdirs) {
- dentry = list_entry(next, struct dentry, d_child);
+ dentry = list_entry(next, struct dentry, d_u.d_child);
dentry->d_fsdata = NULL;
ncp_age_dentry(server, dentry);
next = next->next;
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index e7bd0d9..3e4ba9c 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -644,10 +644,7 @@ int nfs_sync_mapping(struct address_space *mapping)
if (mapping->nrpages == 0)
return 0;
unmap_mapping_range(mapping, 0, 0, 0);
- ret = filemap_fdatawrite(mapping);
- if (ret != 0)
- goto out;
- ret = filemap_fdatawait(mapping);
+ ret = filemap_write_and_wait(mapping);
if (ret != 0)
goto out;
ret = nfs_wb_all(mapping->host);
@@ -864,8 +861,7 @@ nfs_setattr(struct dentry *dentry, struct iattr *attr)
nfs_begin_data_update(inode);
/* Write all dirty data if we're changing file permissions or size */
if ((attr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_SIZE)) != 0) {
- if (filemap_fdatawrite(inode->i_mapping) == 0)
- filemap_fdatawait(inode->i_mapping);
+ filemap_write_and_wait(inode->i_mapping);
nfs_wb_all(inode);
}
/*
diff --git a/fs/nfs/nfsroot.c b/fs/nfs/nfsroot.c
index 985cc53..e897e00 100644
--- a/fs/nfs/nfsroot.c
+++ b/fs/nfs/nfsroot.c
@@ -275,7 +275,9 @@ static int __init root_nfs_parse(char *name, char *buf)
case Opt_noacl:
nfs_data.flags |= NFS_MOUNT_NOACL;
break;
- default :
+ default:
+ printk(KERN_WARNING "Root-NFS: unknown "
+ "option: %s\n", p);
return 0;
}
}
diff --git a/fs/ocfs2/cluster/masklog.h b/fs/ocfs2/cluster/masklog.h
index f5ef5ea..e8c56a3 100644
--- a/fs/ocfs2/cluster/masklog.h
+++ b/fs/ocfs2/cluster/masklog.h
@@ -212,11 +212,10 @@ extern struct mlog_bits mlog_and_bits, mlog_not_bits;
mlog(ML_ENTRY, "ENTRY:\n"); \
} while (0)
-/* We disable this for old compilers since they don't have support for
- * __builtin_types_compatible_p.
+/*
+ * We disable this for sparse.
*/
-#if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) && \
- !defined(__CHECKER__)
+#if !defined(__CHECKER__)
#define mlog_exit(st) do { \
if (__builtin_types_compatible_p(typeof(st), unsigned long)) \
mlog(ML_EXIT, "EXIT: %lu\n", (unsigned long) (st)); \
diff --git a/fs/open.c b/fs/open.c
index f53a5b9..75f3329 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -194,7 +194,8 @@ out:
return error;
}
-int do_truncate(struct dentry *dentry, loff_t length, struct file *filp)
+int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs,
+ struct file *filp)
{
int err;
struct iattr newattrs;
@@ -204,7 +205,7 @@ int do_truncate(struct dentry *dentry, loff_t length, struct file *filp)
return -EINVAL;
newattrs.ia_size = length;
- newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME;
+ newattrs.ia_valid = ATTR_SIZE | time_attrs;
if (filp) {
newattrs.ia_file = filp;
newattrs.ia_valid |= ATTR_FILE;
@@ -216,7 +217,7 @@ int do_truncate(struct dentry *dentry, loff_t length, struct file *filp)
return err;
}
-static inline long do_sys_truncate(const char __user * path, loff_t length)
+static long do_sys_truncate(const char __user * path, loff_t length)
{
struct nameidata nd;
struct inode * inode;
@@ -266,7 +267,7 @@ static inline long do_sys_truncate(const char __user * path, loff_t length)
error = locks_verify_truncate(inode, NULL, length);
if (!error) {
DQUOT_INIT(inode);
- error = do_truncate(nd.dentry, length, NULL);
+ error = do_truncate(nd.dentry, length, 0, NULL);
}
put_write_access(inode);
@@ -282,7 +283,7 @@ asmlinkage long sys_truncate(const char __user * path, unsigned long length)
return do_sys_truncate(path, (long)length);
}
-static inline long do_sys_ftruncate(unsigned int fd, loff_t length, int small)
+static long do_sys_ftruncate(unsigned int fd, loff_t length, int small)
{
struct inode * inode;
struct dentry *dentry;
@@ -318,7 +319,7 @@ static inline long do_sys_ftruncate(unsigned int fd, loff_t length, int small)
error = locks_verify_truncate(inode, file, length);
if (!error)
- error = do_truncate(dentry, length, file);
+ error = do_truncate(dentry, length, 0, file);
out_putf:
fput(file);
out:
@@ -970,7 +971,7 @@ out:
EXPORT_SYMBOL(get_unused_fd);
-static inline void __put_unused_fd(struct files_struct *files, unsigned int fd)
+static void __put_unused_fd(struct files_struct *files, unsigned int fd)
{
struct fdtable *fdt = files_fdtable(files);
__FD_CLR(fd, fdt->open_fds);
diff --git a/fs/pnode.c b/fs/pnode.c
index aeeec8b..f1871f7 100644
--- a/fs/pnode.c
+++ b/fs/pnode.c
@@ -103,7 +103,7 @@ static struct vfsmount *propagation_next(struct vfsmount *m,
struct vfsmount *next;
struct vfsmount *master = m->mnt_master;
- if ( master == origin->mnt_master ) {
+ if (master == origin->mnt_master) {
next = next_peer(m);
return ((next == origin) ? NULL : next);
} else if (m->mnt_slave.next != &master->mnt_slave_list)
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 72b431d..20e5c45 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -21,6 +21,8 @@
#include <linux/bitops.h>
#include <asm/uaccess.h>
+#include "internal.h"
+
static ssize_t proc_file_read(struct file *file, char __user *buf,
size_t nbytes, loff_t *ppos);
static ssize_t proc_file_write(struct file *file, const char __user *buffer,
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index e6a818a..6573f31 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -19,7 +19,7 @@
#include <asm/system.h>
#include <asm/uaccess.h>
-extern void free_proc_entry(struct proc_dir_entry *);
+#include "internal.h"
static inline struct proc_dir_entry * de_get(struct proc_dir_entry *de)
{
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 3e55198..95a1cf3 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -37,6 +37,10 @@ extern int proc_tgid_stat(struct task_struct *, char *);
extern int proc_pid_status(struct task_struct *, char *);
extern int proc_pid_statm(struct task_struct *, char *);
+void free_proc_entry(struct proc_dir_entry *de);
+
+int proc_init_inodecache(void);
+
static inline struct task_struct *proc_task(struct inode *inode)
{
return PROC_I(inode)->task;
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 5b6b0b6..63bf6c0 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -323,6 +323,7 @@ static struct file_operations proc_modules_operations = {
};
#endif
+#ifdef CONFIG_SLAB
extern struct seq_operations slabinfo_op;
extern ssize_t slabinfo_write(struct file *, const char __user *, size_t, loff_t *);
static int slabinfo_open(struct inode *inode, struct file *file)
@@ -336,6 +337,7 @@ static struct file_operations proc_slabinfo_operations = {
.llseek = seq_lseek,
.release = seq_release,
};
+#endif
static int show_stat(struct seq_file *p, void *v)
{
@@ -600,7 +602,9 @@ void __init proc_misc_init(void)
create_seq_entry("partitions", 0, &proc_partitions_operations);
create_seq_entry("stat", 0, &proc_stat_operations);
create_seq_entry("interrupts", 0, &proc_interrupts_operations);
+#ifdef CONFIG_SLAB
create_seq_entry("slabinfo",S_IWUSR|S_IRUGO,&proc_slabinfo_operations);
+#endif
create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);
create_seq_entry("zoneinfo",S_IRUGO, &proc_zoneinfo_file_operations);
diff --git a/fs/proc/root.c b/fs/proc/root.c
index aef148f..6889628 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -18,6 +18,8 @@
#include <linux/bitops.h>
#include <linux/smp_lock.h>
+#include "internal.h"
+
struct proc_dir_entry *proc_net, *proc_net_stat, *proc_bus, *proc_root_fs, *proc_root_driver;
#ifdef CONFIG_SYSCTL
@@ -36,7 +38,6 @@ static struct file_system_type proc_fs_type = {
.kill_sb = kill_anon_super,
};
-extern int __init proc_init_inodecache(void);
void __init proc_root_init(void)
{
int err = proc_init_inodecache();
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 50bd5a8f..0eaad41 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -390,129 +390,12 @@ struct seq_operations proc_pid_smaps_op = {
};
#ifdef CONFIG_NUMA
-
-struct numa_maps {
- unsigned long pages;
- unsigned long anon;
- unsigned long mapped;
- unsigned long mapcount_max;
- unsigned long node[MAX_NUMNODES];
-};
-
-/*
- * Calculate numa node maps for a vma
- */
-static struct numa_maps *get_numa_maps(struct vm_area_struct *vma)
-{
- int i;
- struct page *page;
- unsigned long vaddr;
- struct numa_maps *md = kmalloc(sizeof(struct numa_maps), GFP_KERNEL);
-
- if (!md)
- return NULL;
- md->pages = 0;
- md->anon = 0;
- md->mapped = 0;
- md->mapcount_max = 0;
- for_each_node(i)
- md->node[i] =0;
-
- for (vaddr = vma->vm_start; vaddr < vma->vm_end; vaddr += PAGE_SIZE) {
- page = follow_page(vma, vaddr, 0);
- if (page) {
- int count = page_mapcount(page);
-
- if (count)
- md->mapped++;
- if (count > md->mapcount_max)
- md->mapcount_max = count;
- md->pages++;
- if (PageAnon(page))
- md->anon++;
- md->node[page_to_nid(page)]++;
- }
- cond_resched();
- }
- return md;
-}
-
-static int show_numa_map(struct seq_file *m, void *v)
-{
- struct task_struct *task = m->private;
- struct vm_area_struct *vma = v;
- struct mempolicy *pol;
- struct numa_maps *md;
- struct zone **z;
- int n;
- int first;
-
- if (!vma->vm_mm)
- return 0;
-
- md = get_numa_maps(vma);
- if (!md)
- return 0;
-
- seq_printf(m, "%08lx", vma->vm_start);
- pol = get_vma_policy(task, vma, vma->vm_start);
- /* Print policy */
- switch (pol->policy) {
- case MPOL_PREFERRED:
- seq_printf(m, " prefer=%d", pol->v.preferred_node);
- break;
- case MPOL_BIND:
- seq_printf(m, " bind={");
- first = 1;
- for (z = pol->v.zonelist->zones; *z; z++) {
-
- if (!first)
- seq_putc(m, ',');
- else
- first = 0;
- seq_printf(m, "%d/%s", (*z)->zone_pgdat->node_id,
- (*z)->name);
- }
- seq_putc(m, '}');
- break;
- case MPOL_INTERLEAVE:
- seq_printf(m, " interleave={");
- first = 1;
- for_each_node(n) {
- if (node_isset(n, pol->v.nodes)) {
- if (!first)
- seq_putc(m,',');
- else
- first = 0;
- seq_printf(m, "%d",n);
- }
- }
- seq_putc(m, '}');
- break;
- default:
- seq_printf(m," default");
- break;
- }
- seq_printf(m, " MaxRef=%lu Pages=%lu Mapped=%lu",
- md->mapcount_max, md->pages, md->mapped);
- if (md->anon)
- seq_printf(m," Anon=%lu",md->anon);
-
- for_each_online_node(n) {
- if (md->node[n])
- seq_printf(m, " N%d=%lu", n, md->node[n]);
- }
- seq_putc(m, '\n');
- kfree(md);
- if (m->count < m->size) /* vma is copied successfully */
- m->version = (vma != get_gate_vma(task)) ? vma->vm_start : 0;
- return 0;
-}
+extern int show_numa_map(struct seq_file *m, void *v);
struct seq_operations proc_pid_numa_maps_op = {
- .start = m_start,
- .next = m_next,
- .stop = m_stop,
- .show = show_numa_map
+ .start = m_start,
+ .next = m_next,
+ .stop = m_stop,
+ .show = show_numa_map
};
#endif
diff --git a/fs/relayfs/buffers.c b/fs/relayfs/buffers.c
index 84e21ff..1018781 100644
--- a/fs/relayfs/buffers.c
+++ b/fs/relayfs/buffers.c
@@ -185,5 +185,6 @@ void relay_destroy_buf(struct rchan_buf *buf)
void relay_remove_buf(struct kref *kref)
{
struct rchan_buf *buf = container_of(kref, struct rchan_buf, kref);
- relayfs_remove(buf->dentry);
+ buf->chan->cb->remove_buf_file(buf->dentry);
+ relay_destroy_buf(buf);
}
diff --git a/fs/relayfs/inode.c b/fs/relayfs/inode.c
index 0f7f88d..7b7f2cb 100644
--- a/fs/relayfs/inode.c
+++ b/fs/relayfs/inode.c
@@ -26,31 +26,22 @@
static struct vfsmount * relayfs_mount;
static int relayfs_mount_count;
-static kmem_cache_t * relayfs_inode_cachep;
static struct backing_dev_info relayfs_backing_dev_info = {
.ra_pages = 0, /* No readahead */
.capabilities = BDI_CAP_NO_ACCT_DIRTY | BDI_CAP_NO_WRITEBACK,
};
-static struct inode *relayfs_get_inode(struct super_block *sb, int mode,
- struct rchan *chan)
+static struct inode *relayfs_get_inode(struct super_block *sb,
+ int mode,
+ struct file_operations *fops,
+ void *data)
{
- struct rchan_buf *buf = NULL;
struct inode *inode;
- if (S_ISREG(mode)) {
- BUG_ON(!chan);
- buf = relay_create_buf(chan);
- if (!buf)
- return NULL;
- }
-
inode = new_inode(sb);
- if (!inode) {
- relay_destroy_buf(buf);
+ if (!inode)
return NULL;
- }
inode->i_mode = mode;
inode->i_uid = 0;
@@ -61,8 +52,9 @@ static struct inode *relayfs_get_inode(struct super_block *sb, int mode,
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
switch (mode & S_IFMT) {
case S_IFREG:
- inode->i_fop = &relayfs_file_operations;
- RELAYFS_I(inode)->buf = buf;
+ inode->i_fop = fops;
+ if (data)
+ inode->u.generic_ip = data;
break;
case S_IFDIR:
inode->i_op = &simple_dir_inode_operations;
@@ -83,7 +75,8 @@ static struct inode *relayfs_get_inode(struct super_block *sb, int mode,
* @name: the name of the file to create
* @parent: parent directory
* @mode: mode
- * @chan: relay channel associated with the file
+ * @fops: file operations to use for the file
+ * @data: user-associated data for this file
*
* Returns the new dentry, NULL on failure
*
@@ -92,7 +85,8 @@ static struct inode *relayfs_get_inode(struct super_block *sb, int mode,
static struct dentry *relayfs_create_entry(const char *name,
struct dentry *parent,
int mode,
- struct rchan *chan)
+ struct file_operations *fops,
+ void *data)
{
struct dentry *d;
struct inode *inode;
@@ -127,7 +121,7 @@ static struct dentry *relayfs_create_entry(const char *name,
goto release_mount;
}
- inode = relayfs_get_inode(parent->d_inode->i_sb, mode, chan);
+ inode = relayfs_get_inode(parent->d_inode->i_sb, mode, fops, data);
if (!inode) {
d = NULL;
goto release_mount;
@@ -155,20 +149,26 @@ exit:
* @name: the name of the file to create
* @parent: parent directory
* @mode: mode, if not specied the default perms are used
- * @chan: channel associated with the file
+ * @fops: file operations to use for the file
+ * @data: user-associated data for this file
*
* Returns file dentry if successful, NULL otherwise.
*
* The file will be created user r on behalf of current user.
*/
-struct dentry *relayfs_create_file(const char *name, struct dentry *parent,
- int mode, struct rchan *chan)
+struct dentry *relayfs_create_file(const char *name,
+ struct dentry *parent,
+ int mode,
+ struct file_operations *fops,
+ void *data)
{
+ BUG_ON(!fops);
+
if (!mode)
mode = S_IRUSR;
mode = (mode & S_IALLUGO) | S_IFREG;
- return relayfs_create_entry(name, parent, mode, chan);
+ return relayfs_create_entry(name, parent, mode, fops, data);
}
/**
@@ -183,7 +183,7 @@ struct dentry *relayfs_create_file(const char *name, struct dentry *parent,
struct dentry *relayfs_create_dir(const char *name, struct dentry *parent)
{
int mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO;
- return relayfs_create_entry(name, parent, mode, NULL);
+ return relayfs_create_entry(name, parent, mode, NULL, NULL);
}
/**
@@ -225,6 +225,17 @@ int relayfs_remove(struct dentry *dentry)
}
/**
+ * relayfs_remove_file - remove a file from relay filesystem
+ * @dentry: directory dentry
+ *
+ * Returns 0 if successful, negative otherwise.
+ */
+int relayfs_remove_file(struct dentry *dentry)
+{
+ return relayfs_remove(dentry);
+}
+
+/**
* relayfs_remove_dir - remove a directory in the relay filesystem
* @dentry: directory dentry
*
@@ -236,45 +247,45 @@ int relayfs_remove_dir(struct dentry *dentry)
}
/**
- * relayfs_open - open file op for relayfs files
+ * relay_file_open - open file op for relay files
* @inode: the inode
* @filp: the file
*
* Increments the channel buffer refcount.
*/
-static int relayfs_open(struct inode *inode, struct file *filp)
+static int relay_file_open(struct inode *inode, struct file *filp)
{
- struct rchan_buf *buf = RELAYFS_I(inode)->buf;
+ struct rchan_buf *buf = inode->u.generic_ip;
kref_get(&buf->kref);
+ filp->private_data = buf;
return 0;
}
/**
- * relayfs_mmap - mmap file op for relayfs files
+ * relay_file_mmap - mmap file op for relay files
* @filp: the file
* @vma: the vma describing what to map
*
* Calls upon relay_mmap_buf to map the file into user space.
*/
-static int relayfs_mmap(struct file *filp, struct vm_area_struct *vma)
+static int relay_file_mmap(struct file *filp, struct vm_area_struct *vma)
{
- struct inode *inode = filp->f_dentry->d_inode;
- return relay_mmap_buf(RELAYFS_I(inode)->buf, vma);
+ struct rchan_buf *buf = filp->private_data;
+ return relay_mmap_buf(buf, vma);
}
/**
- * relayfs_poll - poll file op for relayfs files
+ * relay_file_poll - poll file op for relay files
* @filp: the file
* @wait: poll table
*
* Poll implemention.
*/
-static unsigned int relayfs_poll(struct file *filp, poll_table *wait)
+static unsigned int relay_file_poll(struct file *filp, poll_table *wait)
{
unsigned int mask = 0;
- struct inode *inode = filp->f_dentry->d_inode;
- struct rchan_buf *buf = RELAYFS_I(inode)->buf;
+ struct rchan_buf *buf = filp->private_data;
if (buf->finalized)
return POLLERR;
@@ -289,27 +300,27 @@ static unsigned int relayfs_poll(struct file *filp, poll_table *wait)
}
/**
- * relayfs_release - release file op for relayfs files
+ * relay_file_release - release file op for relay files
* @inode: the inode
* @filp: the file
*
* Decrements the channel refcount, as the filesystem is
* no longer using it.
*/
-static int relayfs_release(struct inode *inode, struct file *filp)
+static int relay_file_release(struct inode *inode, struct file *filp)
{
- struct rchan_buf *buf = RELAYFS_I(inode)->buf;
+ struct rchan_buf *buf = filp->private_data;
kref_put(&buf->kref, relay_remove_buf);
return 0;
}
/**
- * relayfs_read_consume - update the consumed count for the buffer
+ * relay_file_read_consume - update the consumed count for the buffer
*/
-static void relayfs_read_consume(struct rchan_buf *buf,
- size_t read_pos,
- size_t bytes_consumed)
+static void relay_file_read_consume(struct rchan_buf *buf,
+ size_t read_pos,
+ size_t bytes_consumed)
{
size_t subbuf_size = buf->chan->subbuf_size;
size_t n_subbufs = buf->chan->n_subbufs;
@@ -332,9 +343,9 @@ static void relayfs_read_consume(struct rchan_buf *buf,
}
/**
- * relayfs_read_avail - boolean, are there unconsumed bytes available?
+ * relay_file_read_avail - boolean, are there unconsumed bytes available?
*/
-static int relayfs_read_avail(struct rchan_buf *buf, size_t read_pos)
+static int relay_file_read_avail(struct rchan_buf *buf, size_t read_pos)
{
size_t bytes_produced, bytes_consumed, write_offset;
size_t subbuf_size = buf->chan->subbuf_size;
@@ -365,16 +376,16 @@ static int relayfs_read_avail(struct rchan_buf *buf, size_t read_pos)
if (bytes_produced == bytes_consumed)
return 0;
- relayfs_read_consume(buf, read_pos, 0);
+ relay_file_read_consume(buf, read_pos, 0);
return 1;
}
/**
- * relayfs_read_subbuf_avail - return bytes available in sub-buffer
+ * relay_file_read_subbuf_avail - return bytes available in sub-buffer
*/
-static size_t relayfs_read_subbuf_avail(size_t read_pos,
- struct rchan_buf *buf)
+static size_t relay_file_read_subbuf_avail(size_t read_pos,
+ struct rchan_buf *buf)
{
size_t padding, avail = 0;
size_t read_subbuf, read_offset, write_subbuf, write_offset;
@@ -396,14 +407,14 @@ static size_t relayfs_read_subbuf_avail(size_t read_pos,
}
/**
- * relayfs_read_start_pos - find the first available byte to read
+ * relay_file_read_start_pos - find the first available byte to read
*
* If the read_pos is in the middle of padding, return the
* position of the first actually available byte, otherwise
* return the original value.
*/
-static size_t relayfs_read_start_pos(size_t read_pos,
- struct rchan_buf *buf)
+static size_t relay_file_read_start_pos(size_t read_pos,
+ struct rchan_buf *buf)
{
size_t read_subbuf, padding, padding_start, padding_end;
size_t subbuf_size = buf->chan->subbuf_size;
@@ -422,11 +433,11 @@ static size_t relayfs_read_start_pos(size_t read_pos,
}
/**
- * relayfs_read_end_pos - return the new read position
+ * relay_file_read_end_pos - return the new read position
*/
-static size_t relayfs_read_end_pos(struct rchan_buf *buf,
- size_t read_pos,
- size_t count)
+static size_t relay_file_read_end_pos(struct rchan_buf *buf,
+ size_t read_pos,
+ size_t count)
{
size_t read_subbuf, padding, end_pos;
size_t subbuf_size = buf->chan->subbuf_size;
@@ -445,7 +456,7 @@ static size_t relayfs_read_end_pos(struct rchan_buf *buf,
}
/**
- * relayfs_read - read file op for relayfs files
+ * relay_file_read - read file op for relay files
* @filp: the file
* @buffer: the userspace buffer
* @count: number of bytes to read
@@ -454,23 +465,23 @@ static size_t relayfs_read_end_pos(struct rchan_buf *buf,
* Reads count bytes or the number of bytes available in the
* current sub-buffer being read, whichever is smaller.
*/
-static ssize_t relayfs_read(struct file *filp,
- char __user *buffer,
- size_t count,
- loff_t *ppos)
+static ssize_t relay_file_read(struct file *filp,
+ char __user *buffer,
+ size_t count,
+ loff_t *ppos)
{
+ struct rchan_buf *buf = filp->private_data;
struct inode *inode = filp->f_dentry->d_inode;
- struct rchan_buf *buf = RELAYFS_I(inode)->buf;
size_t read_start, avail;
ssize_t ret = 0;
void *from;
down(&inode->i_sem);
- if(!relayfs_read_avail(buf, *ppos))
+ if(!relay_file_read_avail(buf, *ppos))
goto out;
- read_start = relayfs_read_start_pos(*ppos, buf);
- avail = relayfs_read_subbuf_avail(read_start, buf);
+ read_start = relay_file_read_start_pos(*ppos, buf);
+ avail = relay_file_read_subbuf_avail(read_start, buf);
if (!avail)
goto out;
@@ -480,58 +491,25 @@ static ssize_t relayfs_read(struct file *filp,
ret = -EFAULT;
goto out;
}
- relayfs_read_consume(buf, read_start, count);
- *ppos = relayfs_read_end_pos(buf, read_start, count);
+ relay_file_read_consume(buf, read_start, count);
+ *ppos = relay_file_read_end_pos(buf, read_start, count);
out:
up(&inode->i_sem);
return ret;
}
-/**
- * relayfs alloc_inode() implementation
- */
-static struct inode *relayfs_alloc_inode(struct super_block *sb)
-{
- struct relayfs_inode_info *p = kmem_cache_alloc(relayfs_inode_cachep, SLAB_KERNEL);
- if (!p)
- return NULL;
- p->buf = NULL;
-
- return &p->vfs_inode;
-}
-
-/**
- * relayfs destroy_inode() implementation
- */
-static void relayfs_destroy_inode(struct inode *inode)
-{
- if (RELAYFS_I(inode)->buf)
- relay_destroy_buf(RELAYFS_I(inode)->buf);
-
- kmem_cache_free(relayfs_inode_cachep, RELAYFS_I(inode));
-}
-
-static void init_once(void *p, kmem_cache_t *cachep, unsigned long flags)
-{
- struct relayfs_inode_info *i = p;
- if ((flags & (SLAB_CTOR_VERIFY | SLAB_CTOR_CONSTRUCTOR)) == SLAB_CTOR_CONSTRUCTOR)
- inode_init_once(&i->vfs_inode);
-}
-
-struct file_operations relayfs_file_operations = {
- .open = relayfs_open,
- .poll = relayfs_poll,
- .mmap = relayfs_mmap,
- .read = relayfs_read,
+struct file_operations relay_file_operations = {
+ .open = relay_file_open,
+ .poll = relay_file_poll,
+ .mmap = relay_file_mmap,
+ .read = relay_file_read,
.llseek = no_llseek,
- .release = relayfs_release,
+ .release = relay_file_release,
};
static struct super_operations relayfs_ops = {
.statfs = simple_statfs,
.drop_inode = generic_delete_inode,
- .alloc_inode = relayfs_alloc_inode,
- .destroy_inode = relayfs_destroy_inode,
};
static int relayfs_fill_super(struct super_block * sb, void * data, int silent)
@@ -544,7 +522,7 @@ static int relayfs_fill_super(struct super_block * sb, void * data, int silent)
sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
sb->s_magic = RELAYFS_MAGIC;
sb->s_op = &relayfs_ops;
- inode = relayfs_get_inode(sb, mode, NULL);
+ inode = relayfs_get_inode(sb, mode, NULL, NULL);
if (!inode)
return -ENOMEM;
@@ -575,33 +553,27 @@ static struct file_system_type relayfs_fs_type = {
static int __init init_relayfs_fs(void)
{
- int err;
-
- relayfs_inode_cachep = kmem_cache_create("relayfs_inode_cache",
- sizeof(struct relayfs_inode_info), 0,
- 0, init_once, NULL);
- if (!relayfs_inode_cachep)
- return -ENOMEM;
-
- err = register_filesystem(&relayfs_fs_type);
- if (err)
- kmem_cache_destroy(relayfs_inode_cachep);
-
- return err;
+ return register_filesystem(&relayfs_fs_type);
}
static void __exit exit_relayfs_fs(void)
{
+
+
+
+
+
unregister_filesystem(&relayfs_fs_type);
- kmem_cache_destroy(relayfs_inode_cachep);
}
module_init(init_relayfs_fs)
module_exit(exit_relayfs_fs)
-EXPORT_SYMBOL_GPL(relayfs_file_operations);
+EXPORT_SYMBOL_GPL(relay_file_operations);
EXPORT_SYMBOL_GPL(relayfs_create_dir);
EXPORT_SYMBOL_GPL(relayfs_remove_dir);
+EXPORT_SYMBOL_GPL(relayfs_create_file);
+EXPORT_SYMBOL_GPL(relayfs_remove_file);
MODULE_AUTHOR("Tom Zanussi <zanussi@us.ibm.com> and Karim Yaghmour <karim@opersys.com>");
MODULE_DESCRIPTION("Relay Filesystem");
diff --git a/fs/relayfs/relay.c b/fs/relayfs/relay.c
index 2a6f7f1..abf3cea 100644
--- a/fs/relayfs/relay.c
+++ b/fs/relayfs/relay.c
@@ -80,11 +80,34 @@ static void buf_unmapped_default_callback(struct rchan_buf *buf,
{
}
+/*
+ * create_buf_file_create() default callback. Creates file to represent buf.
+ */
+static struct dentry *create_buf_file_default_callback(const char *filename,
+ struct dentry *parent,
+ int mode,
+ struct rchan_buf *buf,
+ int *is_global)
+{
+ return relayfs_create_file(filename, parent, mode,
+ &relay_file_operations, buf);
+}
+
+/*
+ * remove_buf_file() default callback. Removes file representing relay buffer.
+ */
+static int remove_buf_file_default_callback(struct dentry *dentry)
+{
+ return relayfs_remove(dentry);
+}
+
/* relay channel default callbacks */
static struct rchan_callbacks default_channel_callbacks = {
.subbuf_start = subbuf_start_default_callback,
.buf_mapped = buf_mapped_default_callback,
.buf_unmapped = buf_unmapped_default_callback,
+ .create_buf_file = create_buf_file_default_callback,
+ .remove_buf_file = remove_buf_file_default_callback,
};
/**
@@ -148,14 +171,16 @@ static inline void __relay_reset(struct rchan_buf *buf, unsigned int init)
void relay_reset(struct rchan *chan)
{
unsigned int i;
+ struct rchan_buf *prev = NULL;
if (!chan)
return;
for (i = 0; i < NR_CPUS; i++) {
- if (!chan->buf[i])
- continue;
+ if (!chan->buf[i] || chan->buf[i] == prev)
+ break;
__relay_reset(chan->buf[i], 0);
+ prev = chan->buf[i];
}
}
@@ -166,17 +191,27 @@ void relay_reset(struct rchan *chan)
*/
static struct rchan_buf *relay_open_buf(struct rchan *chan,
const char *filename,
- struct dentry *parent)
+ struct dentry *parent,
+ int *is_global)
{
struct rchan_buf *buf;
struct dentry *dentry;
+ if (*is_global)
+ return chan->buf[0];
+
+ buf = relay_create_buf(chan);
+ if (!buf)
+ return NULL;
+
/* Create file in fs */
- dentry = relayfs_create_file(filename, parent, S_IRUSR, chan);
- if (!dentry)
+ dentry = chan->cb->create_buf_file(filename, parent, S_IRUSR,
+ buf, is_global);
+ if (!dentry) {
+ relay_destroy_buf(buf);
return NULL;
+ }
- buf = RELAYFS_I(dentry->d_inode)->buf;
buf->dentry = dentry;
__relay_reset(buf, 1);
@@ -214,6 +249,10 @@ static inline void setup_callbacks(struct rchan *chan,
cb->buf_mapped = buf_mapped_default_callback;
if (!cb->buf_unmapped)
cb->buf_unmapped = buf_unmapped_default_callback;
+ if (!cb->create_buf_file)
+ cb->create_buf_file = create_buf_file_default_callback;
+ if (!cb->remove_buf_file)
+ cb->remove_buf_file = remove_buf_file_default_callback;
chan->cb = cb;
}
@@ -241,6 +280,7 @@ struct rchan *relay_open(const char *base_filename,
unsigned int i;
struct rchan *chan;
char *tmpname;
+ int is_global = 0;
if (!base_filename)
return NULL;
@@ -265,7 +305,8 @@ struct rchan *relay_open(const char *base_filename,
for_each_online_cpu(i) {
sprintf(tmpname, "%s%d", base_filename, i);
- chan->buf[i] = relay_open_buf(chan, tmpname, parent);
+ chan->buf[i] = relay_open_buf(chan, tmpname, parent,
+ &is_global);
chan->buf[i]->cpu = i;
if (!chan->buf[i])
goto free_bufs;
@@ -279,6 +320,8 @@ free_bufs:
if (!chan->buf[i])
break;
relay_close_buf(chan->buf[i]);
+ if (is_global)
+ break;
}
kfree(tmpname);
@@ -388,14 +431,16 @@ void relay_destroy_channel(struct kref *kref)
void relay_close(struct rchan *chan)
{
unsigned int i;
+ struct rchan_buf *prev = NULL;
if (!chan)
return;
for (i = 0; i < NR_CPUS; i++) {
- if (!chan->buf[i])
- continue;
+ if (!chan->buf[i] || chan->buf[i] == prev)
+ break;
relay_close_buf(chan->buf[i]);
+ prev = chan->buf[i];
}
if (chan->last_toobig)
@@ -415,14 +460,16 @@ void relay_close(struct rchan *chan)
void relay_flush(struct rchan *chan)
{
unsigned int i;
+ struct rchan_buf *prev = NULL;
if (!chan)
return;
for (i = 0; i < NR_CPUS; i++) {
- if (!chan->buf[i])
- continue;
+ if (!chan->buf[i] || chan->buf[i] == prev)
+ break;
relay_switch_subbuf(chan->buf[i], 0);
+ prev = chan->buf[i];
}
}
diff --git a/fs/relayfs/relay.h b/fs/relayfs/relay.h
index 703503f..0993d3e 100644
--- a/fs/relayfs/relay.h
+++ b/fs/relayfs/relay.h
@@ -1,10 +1,6 @@
#ifndef _RELAY_H
#define _RELAY_H
-struct dentry *relayfs_create_file(const char *name,
- struct dentry *parent,
- int mode,
- struct rchan *chan);
extern int relayfs_remove(struct dentry *dentry);
extern int relay_buf_empty(struct rchan_buf *buf);
extern void relay_destroy_channel(struct kref *kref);
diff --git a/fs/romfs/inode.c b/fs/romfs/inode.c
index c74f382..0a13859 100644
--- a/fs/romfs/inode.c
+++ b/fs/romfs/inode.c
@@ -418,7 +418,7 @@ static int
romfs_readpage(struct file *file, struct page * page)
{
struct inode *inode = page->mapping->host;
- unsigned long offset, avail, readlen;
+ loff_t offset, avail, readlen;
void *buf;
int result = -EIO;
@@ -429,8 +429,8 @@ romfs_readpage(struct file *file, struct page * page)
goto err_out;
/* 32 bit warning -- but not for us :) */
- offset = page->index << PAGE_CACHE_SHIFT;
- if (offset < inode->i_size) {
+ offset = page_offset(page);
+ if (offset < i_size_read(inode)) {
avail = inode->i_size-offset;
readlen = min_t(unsigned long, avail, PAGE_SIZE);
if (romfs_copyfrom(inode, buf, ROMFS_I(inode)->i_dataoffset+offset, readlen) == readlen) {
diff --git a/fs/smbfs/cache.c b/fs/smbfs/cache.c
index f3e6b81..74b86d9 100644
--- a/fs/smbfs/cache.c
+++ b/fs/smbfs/cache.c
@@ -66,7 +66,7 @@ smb_invalidate_dircache_entries(struct dentry *parent)
spin_lock(&dcache_lock);
next = parent->d_subdirs.next;
while (next != &parent->d_subdirs) {
- dentry = list_entry(next, struct dentry, d_child);
+ dentry = list_entry(next, struct dentry, d_u.d_child);
dentry->d_fsdata = NULL;
smb_age_dentry(server, dentry);
next = next->next;
@@ -100,7 +100,7 @@ smb_dget_fpos(struct dentry *dentry, struct dentry *parent, unsigned long fpos)
spin_lock(&dcache_lock);
next = parent->d_subdirs.next;
while (next != &parent->d_subdirs) {
- dent = list_entry(next, struct dentry, d_child);
+ dent = list_entry(next, struct dentry, d_u.d_child);
if ((unsigned long)dent->d_fsdata == fpos) {
if (dent->d_inode)
dget_locked(dent);
diff --git a/fs/smbfs/file.c b/fs/smbfs/file.c
index b4fcfa8..7042e62 100644
--- a/fs/smbfs/file.c
+++ b/fs/smbfs/file.c
@@ -209,8 +209,8 @@ smb_updatepage(struct file *file, struct page *page, unsigned long offset,
{
struct dentry *dentry = file->f_dentry;
- DEBUG1("(%s/%s %d@%ld)\n", DENTRY_PATH(dentry),
- count, (page->index << PAGE_CACHE_SHIFT)+offset);
+ DEBUG1("(%s/%s %d@%lld)\n", DENTRY_PATH(dentry), count,
+ ((unsigned long long)page->index << PAGE_CACHE_SHIFT) + offset);
return smb_writepage_sync(dentry->d_inode, page, offset, count);
}
@@ -374,8 +374,7 @@ smb_file_release(struct inode *inode, struct file * file)
/* We must flush any dirty pages now as we won't be able to
write anything after close. mmap can trigger this.
"openers" should perhaps include mmap'ers ... */
- filemap_fdatawrite(inode->i_mapping);
- filemap_fdatawait(inode->i_mapping);
+ filemap_write_and_wait(inode->i_mapping);
smb_close(inode);
}
unlock_kernel();
diff --git a/fs/smbfs/inode.c b/fs/smbfs/inode.c
index 10b9944..6ec88bf 100644
--- a/fs/smbfs/inode.c
+++ b/fs/smbfs/inode.c
@@ -697,8 +697,7 @@ smb_notify_change(struct dentry *dentry, struct iattr *attr)
DENTRY_PATH(dentry),
(long) inode->i_size, (long) attr->ia_size);
- filemap_fdatawrite(inode->i_mapping);
- filemap_fdatawait(inode->i_mapping);
+ filemap_write_and_wait(inode->i_mapping);
error = smb_open(dentry, O_WRONLY);
if (error)
diff --git a/fs/smbfs/proc.c b/fs/smbfs/proc.c
index 38ab558..d6baec0 100644
--- a/fs/smbfs/proc.c
+++ b/fs/smbfs/proc.c
@@ -3113,7 +3113,7 @@ smb_proc_setattr_unix(struct dentry *d, struct iattr *attr,
LSET(data, 32, SMB_TIME_NO_CHANGE);
LSET(data, 40, SMB_UID_NO_CHANGE);
LSET(data, 48, SMB_GID_NO_CHANGE);
- LSET(data, 56, smb_filetype_from_mode(attr->ia_mode));
+ DSET(data, 56, smb_filetype_from_mode(attr->ia_mode));
LSET(data, 60, major);
LSET(data, 68, minor);
LSET(data, 76, 0);
diff --git a/fs/super.c b/fs/super.c
index 5a347a4f..0a30e51 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -700,8 +700,7 @@ struct super_block *get_sb_bdev(struct file_system_type *fs_type,
s->s_flags = flags;
strlcpy(s->s_id, bdevname(bdev, b), sizeof(s->s_id));
- s->s_old_blocksize = block_size(bdev);
- sb_set_blocksize(s, s->s_old_blocksize);
+ sb_set_blocksize(s, block_size(bdev));
error = fill_super(s, data, flags & MS_VERBOSE ? 1 : 0);
if (error) {
up_write(&s->s_umount);
diff --git a/fs/sysv/dir.c b/fs/sysv/dir.c
index 69a085a..cce8b05 100644
--- a/fs/sysv/dir.c
+++ b/fs/sysv/dir.c
@@ -103,7 +103,7 @@ static int sysv_readdir(struct file * filp, void * dirent, filldir_t filldir)
offset = (char *)de - kaddr;
over = filldir(dirent, name, strnlen(name,SYSV_NAMELEN),
- (n<<PAGE_CACHE_SHIFT) | offset,
+ ((loff_t)n<<PAGE_CACHE_SHIFT) | offset,
fs16_to_cpu(SYSV_SB(sb), de->inode),
DT_UNKNOWN);
if (over) {
@@ -115,7 +115,7 @@ static int sysv_readdir(struct file * filp, void * dirent, filldir_t filldir)
}
done:
- filp->f_pos = (n << PAGE_CACHE_SHIFT) | offset;
+ filp->f_pos = ((loff_t)n << PAGE_CACHE_SHIFT) | offset;
unlock_kernel();
return 0;
}
diff --git a/fs/udf/balloc.c b/fs/udf/balloc.c
index 6598a50..4fae57d 100644
--- a/fs/udf/balloc.c
+++ b/fs/udf/balloc.c
@@ -41,7 +41,7 @@
#define uint(x) xuint(x)
#define xuint(x) __le ## x
-extern inline int find_next_one_bit (void * addr, int size, int offset)
+static inline int find_next_one_bit (void * addr, int size, int offset)
{
uintBPL_t * p = ((uintBPL_t *) addr) + (offset / BITS_PER_LONG);
int result = offset & ~(BITS_PER_LONG-1);
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 4014f17..395e582 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -1957,11 +1957,6 @@ int8_t inode_bmap(struct inode *inode, int block, kernel_lb_addr *bloc, uint32_t
printk(KERN_ERR "udf: inode_bmap: block < 0\n");
return -1;
}
- if (!inode)
- {
- printk(KERN_ERR "udf: inode_bmap: NULL inode\n");
- return -1;
- }
*extoffset = 0;
*elen = 0;
diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index 54828eb..2ba11a9 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -1296,8 +1296,10 @@ static ssize_t ufs_quota_write(struct super_block *sb, int type,
blk++;
}
out:
- if (len == towrite)
+ if (len == towrite) {
+ up(&inode->i_sem);
return err;
+ }
if (inode->i_size < off+len-towrite)
i_size_write(inode, off+len-towrite);
inode->i_version++;
diff --git a/fs/xfs/linux-2.6/xfs_fs_subr.c b/fs/xfs/linux-2.6/xfs_fs_subr.c
index f89340c..4fa4b1a 100644
--- a/fs/xfs/linux-2.6/xfs_fs_subr.c
+++ b/fs/xfs/linux-2.6/xfs_fs_subr.c
@@ -79,8 +79,7 @@ fs_flushinval_pages(
struct inode *ip = LINVFS_GET_IP(vp);
if (VN_CACHED(vp)) {
- filemap_fdatawrite(ip->i_mapping);
- filemap_fdatawait(ip->i_mapping);
+ filemap_write_and_wait(ip->i_mapping);
truncate_inode_pages(ip->i_mapping, first);
}
diff --git a/fs/xfs/xfs_log.h b/fs/xfs/xfs_log.h
index 158829c..f40d439 100644
--- a/fs/xfs/xfs_log.h
+++ b/fs/xfs/xfs_log.h
@@ -30,13 +30,7 @@
* By comparing each compnent, we don't have to worry about extra
* endian issues in treating two 32 bit numbers as one 64 bit number
*/
-static
-#if defined(__GNUC__) && (__GNUC__ == 2) && ( (__GNUC_MINOR__ == 95) || (__GNUC_MINOR__ == 96))
-__attribute__((unused)) /* gcc 2.95, 2.96 miscompile this when inlined */
-#else
-__inline__
-#endif
-xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2)
+static inline xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2)
{
if (CYCLE_LSN(lsn1) != CYCLE_LSN(lsn2))
return (CYCLE_LSN(lsn1)<CYCLE_LSN(lsn2))? -999 : 999;
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